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