a. kinetic energy
xb. potential energy
c. energy used in a useful way
d. all above
2.The mass of uranium or plutonium needed to explode
xa. is a critical mass
b. is a transmutation
c. is fallout
d. is a helium nucleus
3. In the exploding bottle demonstration
xa.molecules moved faster as a result of the heat of the explosion thereby pushing
out the stopper
b. molecules contracted
c. the fuel was water
d. a &;c
4.Mass is
a. the same as weight
b.never the same depending on location the location
c. changed in the space shuttle
xd. neither lost nor gained in a chemical reaction
5.A physical change would be
a. extracting a nail from wood
b. digesting a gummi bear
c. squeezing a tube of toothpaste
d. exploding a firecracker
xe. a &;c
6.If 46 g of Na react COMPLETELY with 70 g of Cl2 the mass of product would be
xa.116 g NaCl
b. 46 g Na
c. 70 g Cl2
d. none above
7. Given:
C + O2 = CO2
12g 32g 44g
a.88 g CO2
xb.44 g CO2
c.22g CO2
d. 24 g CO2
8. Temperature
a. is not related to the speed of molecules
b. is measured in calories
xc. is measured in K and oC
d. b &;c
9.Temperature
a. is the same as heat
xb. is measured in oC
c. is measured in calories
d. flows spontaneously from cold to hot
10.The Shroud of Turin is listed as a fraud by your text, but newer data call the C-14 dating that indicate fraud into question.
xa.This is evidence of the tentative nature of science.
b.This is evidence of the authoritarian nature of science.
c. This is evidence for the dogmatic nature of science.
d. a &;b
11.Given an isotope with a half life of 50 years, how much of a 1000g sample would remain after 150 years?
a. 1000g
b. 500g
c. 250 g
xd. 125 g
e. 62.5 g
12. The two elements Mg &; Ca
xa. are in the same family
b. have very different chemistry
c. are in the same period
d. are both non-metals
13. Column 1A (IA) is
xa. alkali metals
b. halogens
c. metals
d. inert gases
14. 1s22s22p63s2 is the electron configuration for
a. an alkali metal
xb. atomic number 12
c. Ne
d. K
e. a &;d above
15.The type of radiation that travels the least distance in air is
xa. alpha
b. beta
c. gamma
d. all above are similar
16. Radiation is used for
a. age dating historical artifacts
b. age dating the solar system
c. therapy in medicine
d. diagnostics in medicine
xe. all above
17. A bowling ball rolling down a lane has mostly
xa. kinetic energy
b. potential energy
c. authentic energy
d. crystal energy
18. An important and far reaching postulate of kinetic theory is
a. beta radiation is an electron
b. heat travels spontaneously only hot to cold
c. all matter has density
xd.Temperature is directly proportional to the rate of molecular motion
19. Supercooling is
a. when a solid exists above its melting point
b. when a liquid exists above its melting point
xc. when a liquid exists below its melting point
d. when a gas exists above its melting point
20. A compound is:
a. orange juice
xb. KF
c. Co
d. K
21. An element:
a. Ho
b. Co
c. NO
d. all above
xe. a &;b
22. The volume of an irregular object was determined.
Volume of water alone: 130 mL; Volume of water + object = 155 mL
Given the data above, and a mass of 50 g for the object, the density is:
1. 25 mL
2. 0.34 g/mL
3. 0.41 g/mL
x4. 2.0g/mL
23.A set of compounds that illustrate the law of multiple proportions is
a. Co, COc. HOCl, H2O
xb. CO, CO2d.H2S, H2O
24.When we say science is explanatory we mean;
a.theories
b.laws
c.hypotheses
d.statutes
xe.a &;c
25.Given an object of height 750 inches, that height in cm would be:
1 in = 2.54 cm
a.295 cm
xb.1905 cm
c.295
d.1905
26.Given an object of 55 g, and a volume of 80 mL, the density would be
a.0.69
b.1.5g/ml
c.0.69 ml/g
d.1.5 mL/g
xe.0.69 g/mL
27.In experiment 1, Al and copper sulfate/salt,
a.the gas was definitely iron
xb.the gas may have been hydrogen
c.the brownish substance formed was rust (iron oxide)
d.the Al atoms were lost in the reaction
28.Given 1n + 14N = 14C + ? : the unknown particle is
a.electron
xb.1H
c.neutron
d.beta
29.Given 16O,
a.atomic number = 16
b.atomic mass = 8
c.neutrons = 16
xd.electrons = 8
30.Science has several characteristics. Choose the correct one(s) from below.
a. dogmatic
xb. testable
c. authoritarian
d. b &;c