The document discusses the key differences between elements, compounds, and mixtures. Elements are pure substances made of only one type of atom, while compounds are pure substances made of two or more elements chemically bonded together. Mixtures are not pure substances and contain two or more substances blended together but not chemically bonded. Examples are provided of elements, compounds, and mixtures in various states. The document also discusses solvents, solutes, and solutions, defining a solution as a homogeneous mixture of a solute dissolved in a solvent. Readers are asked to identify examples as elements, compounds, mixtures, and to classify items as atoms, elements, molecules or compounds. Questions are provided to test understanding of these concepts.

1. Name
Date
Period
Elements, Compounds and Mixtures (IR Pgs. 67-80, Text pgs. 134-147)
Elements are pure substances made of only one kind of atom. As we have learned, atoms are tiny
structures found in all matter. Most substances contain many different atoms. It is how those atoms
are arranged that determine whether you have an element, a compound or a mixture.
ELEMENT COMPOUND MIXTURES
1. 1. 1.
2. 2. 2.
3. 3. 3.
4. 4. 4.
Particles look like: Particles look like: Particles look like:
Examples: Example: Example:
Salt Salad Coffee
Aluminum can Heterogeneous Homogeneous
Your Example: Your Example: Your Example:

2. Based on your diagrams and descriptions above, label the following illustrations as Elements,
Compounds or Mixtures.
A= B= C= D= E=
Write the letters A, B, C, D or E from the pictures above that match the description.
1. _______ A pure compound made up of 3 elements
2. _______ Atoms of an Element
3. _______ A mixture of 3 elements, both of which are made of atoms
4. _______ Molecules of an element
5. _______ A pure compound made of 2 elements.
Categorize as either Atom, Element, Molecule or Compound
Item Classification Item Classification
Sugar (C6H12O6) CO2
NaCl Water
Iron
Solvent, Solute and Solution (pg. 144-145 in text)
A solution is a mixture where all components blend together to look like one substance. A solution is
a homogeneous mixture that appears to be a single substance. The solution is composed of particles
of two or more substances that are distributed evenly among each other and have the same
appearance and properties throughout. Coffee, Hot Chocolate, Gatorade, Brass, Our Atmosphere
and Cleaning Fluids are all solutions.
In solutions the SOLUTE is the substance that is being dissolved and usually is the smaller quantity in the
mixture. The SOLVENT is the substance doing the dissolving and is usually the larger quantity in the
mixture.
How do you IDENTIFY the solvent or solute in a Homogeneous mixture/solution?
Solute =
Solvent =
Solution =
How are a Homogeneous and Heterogeneous Mixture different?

3. Give some examples in various states: (pgs. 144-145)
States Example in the book Your example
Gas in gas
Gas in liquid
Liquid in liquid
Solid in liquid
Solid in solid
Saturation Levels
Have you ever put sugar into lemonade and seen the grains of sugar sink to the bottom and not dissolve? This is
because the lemonade is supersaturated. In other words, there is not enough water(solvent) to completely
dissolve the sugar (solute). Temperature and Pressure can affect saturation levels. Solutions can either be:
Saturation Level What does this mean? What does this look like? (color)
Unsaturated
Saturated
Supersaturated
Choose one correct answer for each:
1. Fundamental substances that cannot be broken down chemically into simpler substances are____?
A. Elements B. Ions C. Bonds D. electrons
2. Which of the following processes can break down a compound?
A. Dissolving & B. Distilling at the boiling C. Using a magnet to D. Applying an
filtering points of the compound’s attract the metallic electric current
components components
3. When a solid copper block is heated at one end, the entire block is eventually heated. By what process is
the heat transferred?
A. conduction B. convection C. Refraction D. Radiation
4. If the molecules of a substance are locked in place, the substance is most likely a(n)
A. Element. B. Compound. C. Gas. D. Solid.
5. Which of the following occurs when a liquid is boiled?
A. Its molecules break B. It undergoes a C. It breaks down D. Its molecules
apart from each chemical reaction. into it elements. lock into place
other

4. 6. What kind of change is needed to break down a compound?
A. Physical B. Distillation C. Chemical D. Evaporation
7. An element that conducts thermal energy well and is easily shaped is a
A. metal B. nonmetal C. metalloid D. none of these
8. Which of the following substances can be separated into simpler substances only by chemical means?
A. Na B. Salt water C. Water D. Gold
9. A(n) _______________ has a definite ratio of components
A. element B. solute C. solvent D. compound
10. The ________________ is the substance that dissolves to form a solution.
A. solvent B. solute C. metal D. metalloid
11. Elements with the same # of protons but different amount of neutrons in the nucleus are called
A. Ions B. Valence C. Metals D. Isotopes
12. According to the periodic table, which elements form the compound C 6H12O6?
A. Carbon, B. Calcium, Helium C. Chromium and D. Carbon, Helium
Hydrogen & and Oxygen Oxygen and Oxygen
Oxygen
13. Both Carbon Monoxide (CO) and Carbon Dioxide (CO 2) are made of Carbon and Oxygen, but they are
not the same compound. Explain why these compounds differ from each other.
14. When nail polish is dissolved in acetone, which substance is the solute and which is the solvent? Why?
15. In our classroom atmosphere about 78% is nitrogen and 22% is oxygen. Which gas is the solute and which is
the solvent?
16. Which makes up most of the mass of living things?
A. salts B. carbon C. air D. water
17. Which element is the MOST important to living organisms on Earth?
A. carbon B. nitrogen C. phosphorus D. hydrogen
18. Chemical reactions usually release or absorb------?
A. excess atoms. B. ions. C. heat D. atoms of carbon.

5. Create 2 examples of each using the bolts, screws and washers in your lab kit.
Element Compound Mixture
• Pure Substance • Pure Substance • Not a pure substance
• One type of Atom or • Two or more Substances • Two or more substances blended
Molecule bonded together
• Same kind of Molecule • Can blend atoms or molecules….but not
attached
Element Illustration #1 Compound Illustration #1 Mixture Illustration #1
Element Illustration #2 Compound Illustration #2 Mixture Illustration #2
Answer the questions based on your graph. Show extrapolation lines. (Lines on the graph to prove your answer)
31. Which salt is the least soluble at 70 degrees
Celsius?
32. At 30 degrees C, how much NaCl will dissolve
in 200 g of water?
33. At 10 degrees C, which salt is the most
soluble?
34. At 50 degrees C, 70 grams of KNO3 is added to
100 g of water. How much will dissolve? At this
temperature is this solution unsaturated, saturated
or supersaturated?

6. Create 2 examples of each using the bolts, screws and washers in your lab kit.
Element Compound Mixture
• Pure Substance • Pure Substance • Not a pure substance
• One type of Atom or • Two or more Substances • Two or more substances blended
Molecule bonded together
• Same kind of Molecule • Can blend atoms or molecules….but not
attached
Element Illustration #1 Compound Illustration #1 Mixture Illustration #1
Element Illustration #2 Compound Illustration #2 Mixture Illustration #2
Answer the questions based on your graph. Show extrapolation lines. (Lines on the graph to prove your answer)
31. Which salt is the least soluble at 70 degrees
Celsius?
32. At 30 degrees C, how much NaCl will dissolve
in 200 g of water?
33. At 10 degrees C, which salt is the most
soluble?
34. At 50 degrees C, 70 grams of KNO3 is added to
100 g of water. How much will dissolve? At this
temperature is this solution unsaturated, saturated
or supersaturated?

7. Create 2 examples of each using the bolts, screws and washers in your lab kit.
Element Compound Mixture
• Pure Substance • Pure Substance • Not a pure substance
• One type of Atom or • Two or more Substances • Two or more substances blended
Molecule bonded together
• Same kind of Molecule • Can blend atoms or molecules….but not
attached
Element Illustration #1 Compound Illustration #1 Mixture Illustration #1
Element Illustration #2 Compound Illustration #2 Mixture Illustration #2
Answer the questions based on your graph. Show extrapolation lines. (Lines on the graph to prove your answer)
31. Which salt is the least soluble at 70 degrees
Celsius?
32. At 30 degrees C, how much NaCl will dissolve
in 200 g of water?
33. At 10 degrees C, which salt is the most
soluble?
34. At 50 degrees C, 70 grams of KNO3 is added to
100 g of water. How much will dissolve? At this
temperature is this solution unsaturated, saturated
or supersaturated?

8. Create 2 examples of each using the bolts, screws and washers in your lab kit.
Element Compound Mixture
• Pure Substance • Pure Substance • Not a pure substance
• One type of Atom or • Two or more Substances • Two or more substances blended
Molecule bonded together
• Same kind of Molecule • Can blend atoms or molecules….but not
attached
Element Illustration #1 Compound Illustration #1 Mixture Illustration #1
Element Illustration #2 Compound Illustration #2 Mixture Illustration #2
Answer the questions based on your graph. Show extrapolation lines. (Lines on the graph to prove your answer)
31. Which salt is the least soluble at 70 degrees
Celsius?
32. At 30 degrees C, how much NaCl will dissolve
in 200 g of water?
33. At 10 degrees C, which salt is the most
soluble?
34. At 50 degrees C, 70 grams of KNO3 is added to
100 g of water. How much will dissolve? At this
temperature is this solution unsaturated, saturated
or supersaturated?