Chapter 1-3 Review

How’s it going in chemistry? a) Not well, I wish I had dropped. b) Not well, I need to work harder. c) OK, better than math and worse than P.E. d) It’s fun when we do labs. e) I’m loving it!

Will you be ready for the test Monday? a) OMG!!! There’s a test Monday? b) Yes, after I study a bit more. c) Bring it on!

Significant figures are: 1) Easy! I know I will get all of the questions on them right on the test tomorrow. 2) O.k…I think I know what I’m doing, but I’m not 100% confident. 3) Huh? I don’t even know what a “sig fig” is….

How many sig figs are in g? 1) 1 2) 2 3) 3 4) 4

How many sig figs are in g? 1) 1 2) 2 3) 3 4) 4

How many sig figs are in mm? 1) 1 2) 2 3) 3 4) 4 5) 5

How many sig figs are in 3.23 x 10 3 km? 1) 1 2) 2 3) 3 4) 4 5) 6

How many sig figs are in L? 1) 1 2) 2 3) 3 4) 4

Round to 4 sig figs. 1) 234 2) ) ) 235

Round 987,000,000 to 2 sig figs 1) 980,000,000 2) 990,000,000 3) 1.0 x ) 9.8 x ) 9.9 x ) 98 x ) 99 x 10 7

3.76 g g = g 1) g 2) 8.94 g 3) 8.9 g 4) 9 g

156.7 mL – 13 mL = mL 1) mL 2) 143 mL 3) 144 mL 4) 140 mL

5.16 cm x 4.3 cm = cm 2 1) cm 2 2) cm 2 3) 22.2 cm 2 4) 22 cm 2 5) 23 cm 2

6.720 g/15.00 mL = g/mL 1) 0.44 g/mL 2) 0.45 g/mL 3) g/mL 4) g/mL

42.5 m x 25 m = m 2 1) 11 m 2 2) 106 m 2 3) 1060 m 2 4) 1063 m 2 5) 1.06 x 10 3 m 2 6) 1.1 x 10 3 m 2

Melting point is a physical and: a) Extensive property b) Intensive property

Mass is a physical and: a) Extensive property b) Intensive property

Classify as a physical or chemical property: Gold has a density of 19 g/cm 3. a) Physical property b) Chemical property

Classify as a physical or chemical property: Sodium ignites when dropped in water. a) Physical property b) Chemical property

Classify as a physical or chemical property: Water boils at 100° C. a) Physical property b) Chemical property

Classify as a physical or chemical property: Silver tarnishes. a) Physical property b) Chemical property

Classify as a physical change or a chemical change: Frying an egg. a) Physical change b) Chemical change

Classify as a physical change or a chemical change: Breaking a pencil in two. a) Physical change b) Chemical change

Classify as a physical change or a chemical change: Water freezing and forming ice. a) Physical change b) Chemical change

Classify as a physical change or a chemical change: Ripening of a banana. a) Physical change b) Chemical change

Seawater (salt, sand, and water) is an example of a(n): a) Homogeneous mixture b) Heterogeneous mixture c) Element d) Compound

Iced tea with ice cubes is a(n): a) Homogeneous mixture b) Heterogeneous mixture c) Element d) Compound

Iced tea without ice cubes is a(n): a) Homogeneous mixture b) Heterogeneous mixture c) Element d) Compound

Sugar (C 12 H 22 O 11 ) is a(n): a) Homogeneous mixture b) Heterogeneous mixture c) Element d) Compound

Sulfur (S 8 ) is a(n): a) Homogeneous mixture b) Heterogeneous mixture c) Element d) Compound

Other Things to Know for the Exam Scientific Notation Scientific Notation Conversions Conversions Know your prefixes Know your prefixes Attention to Units Attention to Units Density Problem Density Problem Phase Diagrams/Heating Curves Phase Diagrams/Heating Curves

Density is a physical and: a) Extensive property b) Intensive property

Length is a physical and: a) Extensive property b) Intensive property

Classify as a physical or chemical property: Mercury is a liquid at room temperature. a) Physical property b) Chemical property

Classify as a physical change or a chemical change: Burning wood. a) Physical change b) Chemical change

Water (H 2 O) is a(n): a) Homogeneous mixture b) Heterogeneous mixture c) Element d) Compound