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The reactivity series can be used to predict the reactions of metals with oxygen, water, acids, and other metals. Predictions can be made about both simple reactions between a single metal and one of these substances, as well as more complex reactions where metals compete with each other. The document then demonstrates using the reactivity series to predict whether reactions will occur and how vigorous they may be for different metals reacting with oxygen, water, and acid.
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The document compares the reactivity of various metals with water, oxygen, and air. It lists metals from most reactive to least reactive when reacting with each substance. Combining the information gives an overall reactivity series from most reactive to least reactive, which can be remembered using the mnemonic "please send charlie's monkeys and zebras in large cages securely guarded".
b-card Symposium - ILCOR Protocols & Continuous O2 Insufflation in Cardiac Ar...
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This document summarizes a presentation on continuous oxygen insufflation during cardiac arrest. It discusses guidelines from ILCOR in 2015 regarding oxygenation and ventilation during CPR. Studies in animals and some human cases found that continuous oxygen insufflation, which delivers oxygen continuously without ventilations, can improve outcomes compared to positive pressure ventilation. However, guidelines still do not recommend its use by first responders. The presentation suggests ILCOR may update guidelines in 2020 to incorporate continuous oxygen insufflation devices designed specifically for CPR ventilation.PentActiv bracelets
PentActiv bracelets are offered in classical and exquisite designs for men and women respectively. They contain five natural elements - silver ions, oxygen ions, infrared rays, germanium electrons, and magnetic waves - that interact to enhance health by improving circulation, energy, metabolism, tissue regeneration while reducing inflammation, strengthening immunity, and stabilizing blood pressure.
3
The document discusses displacement reactions and uses the Thermit reaction as an example. In this reaction, more reactive aluminum displaces the less reactive iron in iron oxide, taking the oxygen to form aluminum oxide and leaving behind molten iron.
Cebu SMEAG News セブ島のBULATS公式テスト会場に
Cebu SMEAG英語学校ニュース 201602
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BULATSは、実際のビジネスシーンに必要な英語でのコミュニケーション能力を測定。「英検」と同様に、「聞く」「話す」「読む」「書く」の4つの言語技能すべてを評価することができます。
Test descriptivo
Este documento presenta un cuestionario de 25 ítems diseñado para medir el nivel de satisfacción laboral de los trabajadores. El cuestionario cubre factores intrínsecos como el reconocimiento y responsabilidad, y factores extrínsecos como las condiciones de trabajo y organización. Los trabajadores deben indicar su grado de satisfacción o insatisfacción con cada ítem en una escala de 1 a 7. El cuestionario permite calcular puntuaciones de satisfacción general, intrínseca y extrínseca mediante la suma de las respuestas
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Este documento resume las claves de la sesión bursátil del jueves 18 de febrero de 2016, incluyendo datos económicos importantes que se publicarán ese día en Estados Unidos y Europa, así como los últimos cierres del mercado estadounidense donde los principales índices subieron gracias a la recuperación del precio del petróleo. También proporciona niveles de soporte y resistencia para algunos valores del IBEX 35 español.
Recommended
1
The document compares the reactivity of various metals with water, oxygen, and air. It lists metals from most reactive to least reactive when reacting with each substance. Combining the information gives an overall reactivity series from most reactive to least reactive, which can be remembered using the mnemonic "please send charlie's monkeys and zebras in large cages securely guarded".
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This document summarizes a presentation on continuous oxygen insufflation during cardiac arrest. It discusses guidelines from ILCOR in 2015 regarding oxygenation and ventilation during CPR. Studies in animals and some human cases found that continuous oxygen insufflation, which delivers oxygen continuously without ventilations, can improve outcomes compared to positive pressure ventilation. However, guidelines still do not recommend its use by first responders. The presentation suggests ILCOR may update guidelines in 2020 to incorporate continuous oxygen insufflation devices designed specifically for CPR ventilation.PentActiv bracelets
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3
The document discusses displacement reactions and uses the Thermit reaction as an example. In this reaction, more reactive aluminum displaces the less reactive iron in iron oxide, taking the oxygen to form aluminum oxide and leaving behind molten iron.
Cebu SMEAG News セブ島のBULATS公式テスト会場に
Cebu SMEAG英語学校ニュース 201602
TOEIC, IELTSに続き、セブ島のBULATS(Business Language Testing Service) 公式試験会場に指定されました。EUを中心として広く世界に普及しているビジネス英語能力テスト「BULATS」
BULATSは、実際のビジネスシーンに必要な英語でのコミュニケーション能力を測定。「英検」と同様に、「聞く」「話す」「読む」「書く」の4つの言語技能すべてを評価することができます。
Test descriptivo
Este documento presenta un cuestionario de 25 ítems diseñado para medir el nivel de satisfacción laboral de los trabajadores. El cuestionario cubre factores intrínsecos como el reconocimiento y responsabilidad, y factores extrínsecos como las condiciones de trabajo y organización. Los trabajadores deben indicar su grado de satisfacción o insatisfacción con cada ítem en una escala de 1 a 7. El cuestionario permite calcular puntuaciones de satisfacción general, intrínseca y extrínseca mediante la suma de las respuestas
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2
Friction occurs between two surfaces when they are moved against each other due to the roughness of the surfaces at a microscopic level, even if they appear smooth. This roughness requires a force to overcome as the bumps and hollows of each surface interact while moving past one another. Friction exists between solids, liquids, and gases, with different types including air resistance when an object moves through air and drag when an object moves through a liquid like water.
1
Friction is a resistive force that acts to slow moving objects down and tries to stop them from sliding past each other. It always acts in the opposite direction of an object's movement and is what causes things to slow down or stop when in motion. Friction exists between surfaces in contact with each other and generates heat as it transfers motion into thermal energy while impeding further sliding or rolling.
3
A boy walked at an average speed of 3.6 km/h and the question asks how far he will travel in 30 minutes. To calculate this, his speed of 3.6 km/h is multiplied by the time in hours (30 minutes is 0.5 hours) to get a distance of 1.8 km.
1
To calculate average speed, you need to know the total distance an object traveled and the total time it took to travel that distance. Average speed is calculated by dividing the total distance by the total time using the formula: Average Speed = Total Distance / Total Time. The units of distance and time determine the units for speed, such as meters per second, kilometers per hour, or miles per hour.
4
The boy needs to walk 200m to the church at an average speed of 0.8m/s. To calculate how long it would take, the document divides the distance (200m) by the speed (0.8m/s) which equals 250 seconds.
2
A girl traveled 10km around a cross-country ski course in 30 minutes. To calculate her average speed in km/h, take the distance traveled (10km) and divide it by the time taken (0.5 hours). This gives an average speed of 20km/h. To calculate average speed in m/s, first convert the distance to meters (10,000m) and time to seconds (3600s), then divide distance by time to get an average speed of 2.8m/s.
2
Unbalanced forces lead to a change in an object's speed or direction. The document discusses how if only one wind machine is blowing on a skater, or if the pull on one end of two hooks is greater than the other end, the forces are unbalanced and the skater or hooks will start to accelerate and move in the direction of the greater force. Unbalanced forces cause an object to change its speed or direction through acceleration.
1
Two wind machines apply equal but opposite forces to an ice skater, balancing each other out and preventing any movement of the skater. Similarly, when two newtonmeters are pulled equally from both ends, the recorded forces are the same because they balance each other out, causing no movement of the central hooks. Balanced forces that are equal in magnitude but opposite in direction cancel each other out.
4
If the forces on an object are balanced, the object will remain at the same speed and in the same direction. If the forces are unbalanced, the object will experience a change in either its speed (acceleration) or direction of motion. The document provides three examples of calculating the resultant force on different objects based on the balanced and unbalanced forces acting upon them.
3
Forces acting on an object can be added together to calculate the resultant force. The resultant force is found by adding the magnitudes of all the individual forces while accounting for their directions. This single resultant force then determines the overall motion of the object.
1
Forces can be measured using a force meter, which contains a spring connected to a metal hook. When a force is applied to the hook, the spring stretches, with larger forces causing greater stretching and higher readings. The unit of force is the newton (N), so 100 N represents a larger force than 5 N.
2
Forces acting on objects can be represented using force diagrams. A force diagram uses labeled arrows, with the direction of each arrow indicating the direction of a force and the length proportional to its magnitude. Forces include weight, thrust, upthrust, friction, air resistance, and for a falling ball initially, weight and air resistance are the key forces shown in its force diagram.
1
This document discusses different types of forces, including gravity and magnetism which can act over distances without direct contact, as well as friction and upthrust which require direct contact between objects. It notes that all forces involve interactions between objects and that all types of forces can occur whether objects are moving or still.
2
This document describes a method for identifying dyes in a mixture. Dots of single dyes are placed alongside a dot of an unknown mixture on paper. The solvent washes up the paper, allowing the pattern of dyes in the mixture to be compared with the single dyes to determine which dyes the mixture contains.
1
Chromatography is a technique used to separate mixtures of colored or non-colored substances that are soluble in the same solvent. It involves placing a spot of the mixture on filter paper and using one of two methods - either soaking the paper with solvent or slowly dripping solvent onto the paper - to separate the substances as the solvent travels up the paper.
1
The Earth contains an estimated 1,380 million km3 of total water, however only 3% of this is fresh water while the remaining 97% is saltwater that forms the seas and oceans.
4
Desalination is a process that makes freshwater from seawater by removing salt. It is used in some countries that do not receive enough rainwater. The simplest method of desalination is through distillation, which boils the seawater and collects the vapor, leaving the salt behind to produce freshwater.
3
Water is treated to make it safe for drinking by a system where water from a reservoir has chemicals added to combine with dirt and form a precipitate, the water then settles in a settlement tank before passing through filter beds. Chlorine is added before the water is supplied to homes, offices and factories.
1
Distillation is the technique used to separate a liquid from a mixture, involving three steps - evaporation of the liquid into a gas when heated, condensation of the gas back into a liquid in a condenser, and collection of the purified liquid.
2
The document discusses the process of separating salt from the waters of the Dead Sea. The Dead Sea, located between Jordan and Israel, contains some of the saltiest water in the world at almost six times more salty than the ocean. Nothing can live in the Dead Sea due to its high salt content, which is why it is referred to as the "dead" sea. The heat of the sun evaporates the water from the Dead Sea, leaving behind salt deposits that can be collected from salt beds along its shores.
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2
Friction occurs between two surfaces when they are moved against each other due to the roughness of the surfaces at a microscopic level, even if they appear smooth. This roughness requires a force to overcome as the bumps and hollows of each surface interact while moving past one another. Friction exists between solids, liquids, and gases, with different types including air resistance when an object moves through air and drag when an object moves through a liquid like water.
1
Friction is a resistive force that acts to slow moving objects down and tries to stop them from sliding past each other. It always acts in the opposite direction of an object's movement and is what causes things to slow down or stop when in motion. Friction exists between surfaces in contact with each other and generates heat as it transfers motion into thermal energy while impeding further sliding or rolling.
3
A boy walked at an average speed of 3.6 km/h and the question asks how far he will travel in 30 minutes. To calculate this, his speed of 3.6 km/h is multiplied by the time in hours (30 minutes is 0.5 hours) to get a distance of 1.8 km.
1
To calculate average speed, you need to know the total distance an object traveled and the total time it took to travel that distance. Average speed is calculated by dividing the total distance by the total time using the formula: Average Speed = Total Distance / Total Time. The units of distance and time determine the units for speed, such as meters per second, kilometers per hour, or miles per hour.
4
The boy needs to walk 200m to the church at an average speed of 0.8m/s. To calculate how long it would take, the document divides the distance (200m) by the speed (0.8m/s) which equals 250 seconds.
2
A girl traveled 10km around a cross-country ski course in 30 minutes. To calculate her average speed in km/h, take the distance traveled (10km) and divide it by the time taken (0.5 hours). This gives an average speed of 20km/h. To calculate average speed in m/s, first convert the distance to meters (10,000m) and time to seconds (3600s), then divide distance by time to get an average speed of 2.8m/s.
2
Unbalanced forces lead to a change in an object's speed or direction. The document discusses how if only one wind machine is blowing on a skater, or if the pull on one end of two hooks is greater than the other end, the forces are unbalanced and the skater or hooks will start to accelerate and move in the direction of the greater force. Unbalanced forces cause an object to change its speed or direction through acceleration.
1
Two wind machines apply equal but opposite forces to an ice skater, balancing each other out and preventing any movement of the skater. Similarly, when two newtonmeters are pulled equally from both ends, the recorded forces are the same because they balance each other out, causing no movement of the central hooks. Balanced forces that are equal in magnitude but opposite in direction cancel each other out.
4
If the forces on an object are balanced, the object will remain at the same speed and in the same direction. If the forces are unbalanced, the object will experience a change in either its speed (acceleration) or direction of motion. The document provides three examples of calculating the resultant force on different objects based on the balanced and unbalanced forces acting upon them.
3
Forces acting on an object can be added together to calculate the resultant force. The resultant force is found by adding the magnitudes of all the individual forces while accounting for their directions. This single resultant force then determines the overall motion of the object.
1
Forces can be measured using a force meter, which contains a spring connected to a metal hook. When a force is applied to the hook, the spring stretches, with larger forces causing greater stretching and higher readings. The unit of force is the newton (N), so 100 N represents a larger force than 5 N.
2
Forces acting on objects can be represented using force diagrams. A force diagram uses labeled arrows, with the direction of each arrow indicating the direction of a force and the length proportional to its magnitude. Forces include weight, thrust, upthrust, friction, air resistance, and for a falling ball initially, weight and air resistance are the key forces shown in its force diagram.
1
This document discusses different types of forces, including gravity and magnetism which can act over distances without direct contact, as well as friction and upthrust which require direct contact between objects. It notes that all forces involve interactions between objects and that all types of forces can occur whether objects are moving or still.
2
This document describes a method for identifying dyes in a mixture. Dots of single dyes are placed alongside a dot of an unknown mixture on paper. The solvent washes up the paper, allowing the pattern of dyes in the mixture to be compared with the single dyes to determine which dyes the mixture contains.
1
Chromatography is a technique used to separate mixtures of colored or non-colored substances that are soluble in the same solvent. It involves placing a spot of the mixture on filter paper and using one of two methods - either soaking the paper with solvent or slowly dripping solvent onto the paper - to separate the substances as the solvent travels up the paper.
1
The Earth contains an estimated 1,380 million km3 of total water, however only 3% of this is fresh water while the remaining 97% is saltwater that forms the seas and oceans.
4
Desalination is a process that makes freshwater from seawater by removing salt. It is used in some countries that do not receive enough rainwater. The simplest method of desalination is through distillation, which boils the seawater and collects the vapor, leaving the salt behind to produce freshwater.
3
Water is treated to make it safe for drinking by a system where water from a reservoir has chemicals added to combine with dirt and form a precipitate, the water then settles in a settlement tank before passing through filter beds. Chlorine is added before the water is supplied to homes, offices and factories.
1
Distillation is the technique used to separate a liquid from a mixture, involving three steps - evaporation of the liquid into a gas when heated, condensation of the gas back into a liquid in a condenser, and collection of the purified liquid.
2
The document discusses the process of separating salt from the waters of the Dead Sea. The Dead Sea, located between Jordan and Israel, contains some of the saltiest water in the world at almost six times more salty than the ocean. Nothing can live in the Dead Sea due to its high salt content, which is why it is referred to as the "dead" sea. The heat of the sun evaporates the water from the Dead Sea, leaving behind salt deposits that can be collected from salt beds along its shores.
2
- 1. Using the reactivity series The reactivity series can be used to make predictions about the reactions of metals.
- 2. Using the reactivity series The reactivity series can be used to make predictions about the reactions of metals. Predictions can be made about simple reactions of metals with oxygen, water and acids.
- 3. Using the reactivity series The reactivity series can be used to make predictions about the reactions of metals. Predictions can be made about simple reactions of metals with oxygen, water and acids. Predictions can also be made about more complex reactions where one metal is competing with another.
- 4. Using the reactivity series The reactivity series can be used to make predictions about the reactions of metals. Predictions can be made about simple reactions of metals with oxygen, water and acids. Predictions can also be made about more complex reactions where one metal is competing with another. potassium sodium calcium magnesium aluminium zinc iron lead copper silver gold increasingreactivity
- 5. Predicting simple reactions Use the reactivity series to predict if a reaction will take place and how intense the reaction will be: acidgold metal reacts with calcium sodium oxygen oxygen oxygensilver prediction zinc water
- 6. Predicting simple reactions Use the reactivity series to predict if a reaction will take place and how intense the reaction will be: acidgold metal reacts with calcium sodium oxygen oxygen oxygensilver prediction zinc water no reaction
- 7. Predicting simple reactions Use the reactivity series to predict if a reaction will take place and how intense the reaction will be: acidgold metal reacts with calcium sodium oxygen oxygen oxygensilver prediction zinc water no reaction fizzing
- 8. Predicting simple reactions Use the reactivity series to predict if a reaction will take place and how intense the reaction will be: acidgold metal reacts with calcium sodium oxygen oxygen oxygensilver prediction zinc water no reaction fizzing burns vigorously
- 9. Predicting simple reactions Use the reactivity series to predict if a reaction will take place and how intense the reaction will be: acidgold metal reacts with calcium sodium oxygen oxygen oxygensilver prediction zinc water no reaction fizzing burns vigorously very slow reaction
- 10. Predicting simple reactions Use the reactivity series to predict if a reaction will take place and how intense the reaction will be: acidgold metal reacts with calcium sodium oxygen oxygen oxygensilver prediction zinc water no reaction fizzing burns vigorously very slow reaction burns moderately