Chemistry Final Practice

1.

1 point

How many significant figures are in 301.0?

1

2

3

4

2.

1 point

34.04-2.2=

31

32

31.8

31.80

3.

1 point

Put the metric units in order from greatest to smallest

basic unit, deka, hecto, kilo

hecto, deka, kilo, basic unit

kilo, deka, hecto, basic unit

kilo, hecto, deka, basic unit

4.

1 point

The accuracy of a measurement is based on

how close a series of measurements are to each other

how close a measurement is to a known value

5.

1 point

Precision of a measurement is based on

how close a series of measurements are to each other

how close a measurement is to a known value

6.

1 point

If something has high specific heat

it is less likely to stay the same temperature

it is more like to have the same temperature all the time

it is more likely to stay the same temperature

7.

1 point

What is the unit for specific heat?

joules

calories/(grams * degrees celcius)

all of the above

none of the above

8.

1 point

The "ΔT" in the specific heat equation represents

change in temperature

specific heat

mass of a substance

9.

1 point

How many electrons are in the d orbital?

6

14

2

10

10.

1 point

Light is

a particle

a wave

both a and b

neither a nor b

11.

1 point

Convert 37.5 grams of sodium nitrate to formula units.

3.09x10^25

2.66x10^23

2.17x10^23

4.22x10^21

12.

1 point

What period contains nitrogen?

5

7

15

2

13.

1 point

Which of these elements is an alkaline earth metal?

Silver

Sodium

Arsenic

Magnesium

14.

1 point

Which of these elements has the largest atomic radius?

Uranium

Carbon

Radium

Manganese

15.

1 point

Which particles make up a proton?

atoms

quarks

anions

cations

16.

1 point

What is emitted after beta radiation occurs?

a cation

a neutron

an electron

a proton

17.

1 point

Which takes the most amount of energy to accomplish?

Vaporizing liquid water

Heating gas

Bringing water to a boil

Melting ice

18.

1 point

Which is the strongest intermolecular force?

dipole - dipole

ionic

hydrogen bonds

dispersion

19.

1 point

How many atoms are in a mole?

6.02x10^23

number of protons/3

1000000

22

20.

1 point

Which of the following is polar?

hydrogen

carbon dioxide

water

hydrogen gas

21.

1 point

In which order are the electron orbitals categorized?

FSDP

DPSF

SDPF

SPDF

22.

1 point

Under what circumstances will an ionic compound conduct electricity?

ionic compunds always conduct electricity

only when crushed to a powder

only when they're completely dry

only when dissolved in water

23.

1 point

Which molecule experiences triple bonding?

O2

N2

C2

H2O

24.

1 point

Which isotope is used to tell scientists how long a once living thing has been dead for?

U-238

P-34

C

C-14

25.

1 point

What must the difference in electronegativity of 2 elements be in order for their bond to be non polar covalent?

0-4

0-0.4

anything greater than 2

0.4-2

26.

1 point

What intermolecular forces does the molecule methanol experience?

hydrogen "bonds"

dispersion forces

dipole - dipole forces

all of the above

27.

1 point

If the element U-238 went through alpha decay rwice, what would the resulting element be?

Ra-230

Ra-234

the element would not change

Th-234

28.

1 point

What are heat of fusion and heat of vaporization measured in?

Kilojoules/mole

Microjoules/mole

Calories/mole

Joules/mole

29.

1 point

What is the molecular geometry for a carbon dioxide molecule?

Bent

Trigonal planar

Linear

Tetrahedral

30.

1 point

Ionic compounds are compounds that ______?

don't have any bonds

bond metal to metal

bond nonmetal to nonmetal

bond metal to nonmetal

31.

1 point

How many phosphorous are in Cu3(PO4)2?

6

4

8

2

32.

1 point

Which type of molecule commonly has prefixes in its name?

Covalent

Ionic

Intermolecular

Dispersion

33.

1 point

What piece of equipment should be used if someone wants to measure out 33.5 mL of water?

A 50 mL beaker

A 100 mL beaker

A 100 mL graduated cylinder

A 50 mL flask

34.

1 point

Two atoms are isotopes if they have the same number of _______, but different numbers of ______.

neutrons, protons

electrons, protons

protons, neutrons

neutrons, quarks

35.

1 point

What is the electron domain geometry for the water molecule (H2O)?

Linear

Trigonal Planar

Bent

Tetrahedral

36.

1 point

Of the following elements, which is the most electronegative?

flourine

oxygen

sodium

bromine

37.

1 point

Valence electrons are ______ that an atom has

the # of electrons in the highest principle energy level

the # of electrons in the lowest principle energy level

the # of protons

the # of electrons

38.

1 point

WHich would give off a higher energy light?

An electron moving from n=2 to n=5

An electron moving from n=4 to n=2

39.

1 point

What ionic compound will form with lithium and oxygen?

LiO3

Li2O

Li3O

LiO

40.

1 point

Transition metals

have more than one ionic charge

have only one ionic charge

have zero ionic charges

41.

1 point

Ionic compounds are usually ____ at room temp

gas

solid

liquid

42.

1 point

Ionic compounds have ___ boiling points/melting points

Low

High

43.

1 point

Which of the following would you expect to have a high melting point?

C6H12O6

CO2

MgO

H2O

44.

1 point

What is the charge of Sn in SnO2?

1+

3+

2+

4+

45.

1 point

How many electrons are shared in a double bond between 2 atoms?

1

3

4

2

46.

1 point

What is the name of MgO?

magnesium (II) oxide

magnesium oxide

magnesium (I) oxide

magnesium monoxide

47.

1 point

What is the name of PH3

triphosphorous trihydride

phosphorous hyride

phosphorus trihydride

phosphorous (II) hydride

48.

1 point

What is the name of Cu3(PO4)2?

copper phosphate

copper (II) phosphate

copper phosphide

copper (III) phosphate

49.

1 point

What is the name of C2H2?

carbon hydride

bicarbon dihydride

ethyne

both b/c

50.

1 point

What is the molecular geometry of the sulfite ion?

linear

trigonal planar

trigonal pyramidal

bent