Describing Matter<br />Chapter 1.2<br />
Objectives<br />Distinguish between different characteristics of matter, including mass, volume, and weight.<br />Identify...
Matter has Mass and Volume<br />Matter<br />Anything that has mass and volume<br />Volume<br />Amount of space an object t...
Units of Measurement<br />Quantity<br />Magnitude, size, or amount<br />5        3500    	0.00045<br />Unit<br />Standard ...
SI Base Units<br />Quantity	   Symbol		Unit		Abbrev.<br />Length		l		meter		m<br />Mass		m		kilogram		kg<br />Time		t		sec...
SI Prefixes<br />Prefix	Abbrev.	Exponent	      Meaning<br />Kilo		k		103			1000<br />Hecto	h		102			100<br />Dekada		10			...
Converting Units<br /> Conversion Factor<br />Ratio that is derived from the equation of two different units and that can ...
Using conversion Factors<br />Identify quantity and unit given<br />Use correct equality<br />Set up so given unit cancels...
Practice<br />357 mL  =  ______  L<br />25 kg     =  ______ mg<br />35000 cm3  =  ______  L<br />2.46 L  =  ______ cm3<br ...
Derived Units<br /> Requires more than one measurement<br />Examples: <br />Speed  -  distance and time,  miles/hour or m/...
Properties of Matter<br />Physical Properties<br />Property that can be changed without changing the identity of the subst...
Chemical Properties<br />Describes a substance’s ability to participate in chemical reactions.<br />Examples<br />Rusting<...
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Applied Chapter 1.2 : Describing Matter

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Applied Chapter 1.2 : Describing Matter

  1. 1. Describing Matter<br />Chapter 1.2<br />
  2. 2. Objectives<br />Distinguish between different characteristics of matter, including mass, volume, and weight.<br />Identify and us SI unit in measurements and calculations.<br />Set up conversion factors, and use them in calculations.<br /> Identify and describe physical properties, including density.<br />Identify chemical properties.<br />
  3. 3. Matter has Mass and Volume<br />Matter<br />Anything that has mass and volume<br />Volume<br />Amount of space an object takes up<br />Use graduated cylinder or meter stick<br />Measured in mL, cm3, L<br />Mass<br />Amount of matter in an object<br />Use triple beam balance or electronic scale<br />Measure in grams, mg, kg<br />Weight<br />Force produced by gravity acting on object<br />
  4. 4. Units of Measurement<br />Quantity<br />Magnitude, size, or amount<br />5 3500 0.00045<br />Unit<br />Standard of measurement<br />Liters, Grams, Seconds<br />SI Units<br />Standard International Units <br />
  5. 5. SI Base Units<br />Quantity Symbol Unit Abbrev.<br />Length l meter m<br />Mass m kilogram kg<br />Time t second s<br />Volume v Liter L <br />
  6. 6. SI Prefixes<br />Prefix Abbrev. Exponent Meaning<br />Kilo k 103 1000<br />Hecto h 102 100<br />Dekada 10 10<br />Base 100 1<br />Deci d 10-1 1/10<br />Centi c 10-2 1/100<br />Milli m 10-3 1/1000<br />
  7. 7. Converting Units<br /> Conversion Factor<br />Ratio that is derived from the equation of two different units and that can be used to convert from one unit to the other.<br />Example of equalities<br />1 kg = 1000 g or <br />1 m = 100 cm or<br />1 kg<br />1000 g<br />1000 g<br />1 kg<br />1 m<br />100 cm<br />100 cm<br />1 m<br />
  8. 8. Using conversion Factors<br />Identify quantity and unit given<br />Use correct equality<br />Set up so given unit cancels out<br />Multiply by conversion factor<br />Mass given<br />Mass<br /> Wanted<br />1000 g<br />4.5 kg<br />=<br />4500 g<br />1 kg<br />Conversion Factor<br />
  9. 9. Practice<br />357 mL = ______ L<br />25 kg = ______ mg<br />35000 cm3 = ______ L<br />2.46 L = ______ cm3<br />Which quantity is larger?<br />2400 cm or 2 m<br />3 L or 3 mL<br />17 g or 1.7 kg <br />
  10. 10. Derived Units<br /> Requires more than one measurement<br />Examples: <br />Speed - distance and time, miles/hour or m/s<br />Area – length x width, m2<br />Volume – L x W x H, cm3<br />1 L = 1000 mL = 1000 cm3<br />
  11. 11. Properties of Matter<br />Physical Properties<br />Property that can be changed without changing the identity of the substance.<br />Example: color, texture, melting point, smell, density<br />Density:<br />Ratio of mass to volume - g/cm3 or g/mL<br />Density = Mass or D = M<br />Calculate the density of a piece of metal if its mass is 201.0 g and it volume is 18.9 cm3<br />Volume<br />V<br />
  12. 12. Chemical Properties<br />Describes a substance’s ability to participate in chemical reactions.<br />Examples<br />Rusting<br />Not rusting– silver and gold<br />+<br />table salt<br />sodium metal<br />chlorine gas<br />Sodium Chlorine Sodium Chloride <br />

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