Quiz about Semester I Final Exam Review

Question 1

Which of the following metric units is a measure of volume?

Accepted Answer

liter

Answer

kilogram

Answer

centimeter

Answer

Candela

Question 2

The composition of the mixture of gases that makes up our air is best represented on what kind of graph?

Accepted Answer

pie chart

Answer

bar graph

Answer

line graph

Answer

variable graph

Question 3

During a storm, rainwater depth is measured every 15 minutes. Which of these terms describes the depth of the water?

Accepted Answer

dependent variable

Answer

controlled variable

Answer

independent variable

Answer

significant variable

Question 4

After completing an experiment, all chemical wastes should be

Accepted Answer

disposed of according to your instructor's directions.

Answer

left at your lab station for the next class.

Answer

dumped in the sink.

Answer

taken home.

Question 5

You are heating a substance in a test tube. Always point the open end of the tube

Accepted Answer

away from all people.

Answer

toward yourself.

Answer

toward your lab partner.

Answer

toward another classmate.

Question 6

Matter is...

Accepted Answer

anything that takes up space and has mass.

Answer

any visible solid that has mass.

Answer

any liquid that takes up space and has mass.

Answer

any liquid or solid that takes up space.

Question 7

Compounds and elements are

Accepted Answer

pure substances.

Answer

always solids.

Answer

mixtures.

Answer

dense.

Question 8

Which of the following substances is a compound?

Accepted Answer

carbon dioxide

Answer

air

Answer

nitrogen

Answer

oxygen

Question 9

If vinegar is poured into two test tubes containing white powders that look identical, which of the following statements is a reasonable conclusion as to why bubbles form in one tube but not the other?

Accepted Answer

The materials in the two test tubes cannot be the same substance.

Answer

The test tubes contain two different mixtures.

Answer

The contents of the test tubes are two different pure substances.

Answer

One test tube contains an element, and the other contains a compound.

Question 10

Which of these statements describes the particles of a liquid?

Accepted Answer

Particles are close together and move past each other easily.

Answer

Particles are far apart and move freely.

Answer

Particles are close together and vibrate in place.

Answer

Particles are far apart and unable to change location.

Question 11

According to the modern model of the atom,

Accepted Answer

moving electrons form an electron cloud.

Answer

electrons and protons circle neutrons.

Answer

neutrons have a positive charge.

Answer

the number of protons an atom has varies.

Question 12

The atom has a mass of 11 amu and contains five electrons, its atomic number must be

Accepted Answer

5

Answer

55

Answer

16

Answer

6

Question 13

Which statement about atoms of elements in the same group of the Periodic Table is true?

Accepted Answer

They have similar chemical properties.

Answer

They have the same number of protons.

Answer

They have the same mass number.

Answer

They have the same number of total electrons.

Question 14

The majority of elements in the Periodic Table are

Accepted Answer

conductors.

Answer

nonmetals.

Answer

synthetic.

Answer

noble gases.

Question 15

Which of the following statements about Krypton is NOT true?

Accepted Answer

It is a metal.

Answer

Its atomic mass is 83.80 amu.

Answer

Its atomic number is 36.

Answer

It is a noble gas.

Question 16

Which group on the Periodic Table is most likely to gain 2 electrons?

Accepted Answer

Group 16

Answer

Alkali metals

Answer

Alkaline Earth metals

Answer

Halogens

Question 17

Which group on the Periodic Table is highly reactive?

Accepted Answer

Alkali metals

Answer

Alkaline Earth metals

Answer

Group 16

Answer

Noble gases

Question 18

Which series of elements are in the same period?

Accepted Answer

Na, Mg, Si, P

Answer

Mg, Co, Bi, Rn

Answer

Sn, Pb, F, I

Answer

Ca, Sr, Cu, Ag

Question 19

What causes atoms to form chemical bonds with other atoms?

Accepted Answer

They want to have filled outer orbitals (octet rule).

Answer

When two atoms get close together, they merge into one.

Answer

The interaction of valence electrons forms a more stable configuration.

Answer

The attraction of the nuclei for one another causes atoms to share electrons.

Question 20

Which of the following pairs of atoms is most likely to form a covalently bonded compound?

Accepted Answer

nitrogen and iodine

Answer

bromine and lithium

Answer

helium and fluorine

Answer

nitrogen and copper

Question 21

Which of the following statements about covalent compounds is TRUE?

Accepted Answer

Covalent compounds generally exist as molecules.

Answer

Covalent compounds are good electrical conductors in solution.

Answer

The valence electrons are always shared equally by the two atoms in a covalent bond.

Answer

Covalent bonds generally involve two atoms that are very different, such as a metal and a nonmetal.

Question 22

A chemical bond can be defined as

Accepted Answer

A force that joins atoms or ions together.

Answer

A force blending nuclei together.

Answer

A force caused by electric repulsion.

Answer

All of the above.

Question 23

An atom of which of the following elements is unlikely to form a positively charged ion?

Accepted Answer

selenium, Se

Answer

potassium, K

Answer

barium, Ba

Answer

silver, Ag

Question 24

How many valence electrons does Si have?

Accepted Answer

Four

Answer

One

Answer

Two

Answer

Three

Question 25

Which electron-dot symbol (Lewis dot diagram) correctly represents an atom of its given element?

Accepted Answer

Al with 3 electron dots around it

Answer

S with 4 electron dots around it

Answer

Li with 3 electron dots around it

Answer

B with 5 electron dots around it

Question 26

How many electrons are in the valence shell of this atom?

Accepted Answer

3

Answer

2

Answer

8

Answer

10

Question 27

What type of intermolecular force causes NaCl to dissolve in water?

Accepted Answer

Ion-Dipole

Answer

London dispersion

Answer

Hydrogen bonding

Answer

Dipole-Dipole

Question 28

Which of the following statements is true?

Accepted Answer

Intermolecular forces are forces of attraction between atoms.

Answer

Covalent bonds result from electrons being shared between atoms in a molecule.

Answer

Intermolecular forces determine physical properties such as the boiling point of a substance.

Answer

Chemical bonds include ionic bonds and covalent bonds.

Semester I Final Exam Review

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