Conceptual Chemistry Chapter 1 Pre-Exam

Name ______Section ______Date ______

Conceptual Chemistry Chapter 1 Pre-Exam Matter and its Properties

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

1) Chemistry is the study of ______A) matter B) transformations of matter C) only microscopic phenomena D) only macroscopic phenomena E) both A and B

2) Which of the following can be classified as matter? A) perfume B) sand C) water D) ice cream E) all of the above

3) Which of the following would not be considered matter? A) clouds B) light C) trees D) air E) rain

4) Which of the following would be considered applied research? A) examining how susceptible a metal is to bending B) testing the strength of a piece of metal C) determining the tightest and strongest metal to be used for an airplane wing D) determining the melting temperature of a metal E) determining how readily a metal corrodes in a wet environment

5) Which of the following would be considered basic research? A) testing a safe, nontoxic mouse glue B) examining why a mouse Likes cheddar cheese more than swiss cheese C) examining how quickly a trapdoor closes D) studying ways of catching mice safely E) testing the strength of a mouse cage

6) What is the first step in the scientific process? A) check results by repeating work B) observe a natural phenomena C) make a prediction about what may be happening D) generate a scientific hypothesis E) develop a test 7) Why do scientists run controlled experiments and repeat their tests several times? A) to improve the chance of not being successful B) to minimize the number of outcomes and limit flaws in the experiment C) because chemistry is about doing experiments all day long D) to maximize the number of impossible conclusions that can be obtained E) because they get paid by the hour

8) Which of the following statements about science is not true? A) Experiments do not always go as planned, surprises and different outcomes can occur B) Scientists believe that all natural phenomenon can be explained. C) Science deals only with natural testable hypotheses. D) Science deals with observations and experimentation. E) An experiment can always be used to prove that a hypothesis is totally correct.

9) How many meters is 15.5 millimeters? A) 0.0000155 m B) 0.01 55 m C) 15,500 m D) 1.55 m E) 0.00155 m

10) Which of the following does not describe mass? A) grams B) kilograms C) how much space an object occupies D) the amount of inertia in a given object E) how much matter is in a given object

11) Which of the following does not describe volume? A) liters B) milliliters C) the amount of space a material occupies D) the area inside a box 20 cm x 20 cm x 20 cm E) the weight of a given object

12) The gravity of the moon is 1/6 that of Earth’s. If your mass is 65 kilograms on Earth, what is your mass on the moon? A) 65 kg B) 10.8 kg C) 6.5 kg D) 390 kg E) 39.0 kg

13) What is the difference between mass and weight? A) Weight is the observed effect of gravity on mass. B) Mass is the observed effect of inertia on weight. C) Weight is how much; mass is how much space. D) Weight and mass are the same everywhere. E) Mass is how much; weight is how much space. 14. Which of the following is an example of something with potential energy? A) chemical bonds B) gasoline in the gas tank of your car C) an arrow in a loosened bow D) a boulder at the edge of a cliff E) all of the above

15) Which of the following is an example of something with kinetic energy? A) a candy bar with 230 kilocalories B) a boulder at the bottom of a cliff C) a ball falling through the air D) a log of wood in a fireplace that has not been lit E) a dart stuck into a dart board

16) Which temperature is higher? A) 100 K B) They are all equal. C) 400°F D) 100°C E) none of the above

17) Which of the following best describes temperature? A) Temperature is the measure of the average amount of energy in a substance. B) Temperature is the measure of the heat of an object. C) Temperature is the measure of the total amount of energy in a substance. D) all of the above E) none of the above

18) Which of the following best describes a gas? A) The molecules are closely spaced but have no long-range order. B) The material has a fixed volume and a fixed shape. C) The material has a fixed volume but has no definite shape. D) The molecules are moving slowly and closely spaced. E) The molecules are moving quickly and are widely spaced.

19) Which would have the most kinetic energy? A) a hot liquid B) a hot gas C) a solid D) a cool liquid E) a cool gas

20) What type of phase change does the following figure best describe? A) freezing B) melting C) condensation D) evaporation E) none of the above 21) Using the above images illustrating identical volumes of different materials, which has the highest density? A) A B) B C) C D) All have the same mass. E) All have the same density.

22) If the density of a block of ice is 0.92 g/mL, what is the volume of 100 g of ice? A) 92 mL B) 10.9mL C) 0.92mL D) 109mL E) 0.l09mL

23) Which of the following has the largest density? A) a 1-g object with a volume of 10 mL B) a 10-g object with a volume of 10 mL C) a 10-g object with a volume of 1 mL D) a 200-g object with a volume of 200 mL E) All of the densities are the same.

24) A piece of aluminum weighing 10.0 grams is placed into a graduated cylinder that has an initial volume (before immersion) of 35.0 mL. After immersion, the volume on the cylinder reads 38.7 mL. What is the density of the metal sample? A) 3.70 g/mL B) 2.70 g/mL C) 0.25 g/mL D) 0.37 g/mL E) 0.28 g/mL

25) A testable assumption that is used to explain an observation is called a(n) ______. A) natural law B) thesis C) unnatural law D) hypothesis E) theory

26) The quantitative measure of how much matter is in a given object is called ______. A) volume B) weight C) density D) energy E) mass

27) Matter that has a definite shape and volume is called a(n) ______. A) liquid B) gas C) gas D) solid E) matter 28) Matter that does not have a definite shape or volume is called a(n) ______. A) liquid B) weight C) gas D) solid E) matter

29) A transformation from a gas to a liquid is called ______A) melting B) freezing C) condensation D) evaporation E) none of the above

30) A transformation from a liquid to a gas is called ______A) evaporation B) condensation C) freezing 0) melting E) none of the above

31) Which change of state requires an input of energy? A) evaporation B) condensation C) freezing D) melting E) A and D

32) Which change of state requires that energy be removed? A) evaporation B) condensation C) freezing D) melting E) B and C

Matching

33) the amount of space an object takes up is ______34) the temperature at which theoretically particle motion ceases is ______35) the study of matter is ______36) the inverse relationship between mass and volume is ______37) the change from a liquid to a solid is known as ______38) the ability of matter to create or perform work is known as ______39) an educated guess created as a result of performed research is ______40) a measure of heat is known as ______41) the effect of gravity upon the mass of an object is known as its ______42) the system of measurement used in the sciences is ______

Don’t for get to review your experiments, vocabulary terms and metric system relationships! MULTIPLE CHOICE ANSWER KEY

1) E 2) E 3) B 4) C 5) B 6) B 7) B 8) E 9) B 10) C 11) E 12) A 13) A 14) E 15) C 16) C 17) B 18) E 19) B 20) A 21) A 22) D 23) C 23) C 24) B 25) D 26) E 27) D 28) C 29) C 30) A 31) E 32) E 33. volume 34. absolute zero 35. chemistry 36. density 37. freezing 38. energy 39. hypothesis 40. temperature 41. weight 42. metric