GEN CHEM

Question 1

states that the total pressure is the sum
of the partial pressures of all gas components

Answer 1

Dalton’s Law

Question 2

Mark has unknowingly driven over a very large nail
when exiting his work parking lot. He has a long
commute home, and by the time he arrives he will
have a flat tire. The air that is slowly escaping from
the hole in his tire is an example of

Answer 2

Effusion

Question 3

To solve gas law calculations, which unit in
temperature must be measured in

Answer 3

Kelvin

Question 4

The ideal gas equation describes the relationship
among the four variables P, V, T, and n.

Answer 4

• Pressure (P) in atm
• Volume (V) in L
• Temperature (T) in K
• Moles (n) in mol

Question 5

correct form of the equation for the ideal gas law

Answer 5

PV = nRT

Question 6

SI unit for Pressure

Answer 6

Kilopascal

Question 7

can be observed without
changing the composition of the substance

Answer 7

Physical property

Question 8

It is depends upon the amount of substance

Answer 8

Extensive properties

Question 9

describes the ability of a
substance to change the chemical composition, thus
forms a new substance

Answer 9

Chemical property

Question 10

are composed of several components
which are easy to separate

Answer 10

Mixtures

Question 11

are pure substances that are made up of
only one kind of atoms

Answer 11

Element’s

Question 12

are pure substances made up of two
or more kind of atoms

Answer 12

Compounds

Question 13

the property of a substance to interact
with another substance and form one or more new
substances

Answer 13

Reactivity

Question 14

the chemical formula for sodium chloride

Answer 14

NaCl

Question 15

the chemical formula for methane

Answer 15

CH4

Question 16

describes the use of chemicals
in solving crime scene

Answer 16

Forensic chemistry

Question 17

It is done by using an instrument with a
meshed or perforated bottom by shaking the
instrument to separate coarse materials from fine ones.

Answer 17

Sieving

Question 18

atoms of an element having the same
atomic number but different mass numbers

Answer 18

Isotopes

Question 19

The ball-and-stick model used to represent
compounds because

Answer 19

it shows three-dimensional
arrangement of atoms and bonds.

Question 20

provides an idea of how the
atoms in the molecule or the compound are arranged
along with their bond formations

Answer 20

Structural Formula

Question 21

Magnesium Chloride

Answer 21

MgCl2

Question 22

Tritium

Answer 22

3/1 H

Question 23

correct formula for calcium carbonate

Answer 23

CaCO3

Question 24

refers to the maximum amount of
product that would result if the limiting reagent were
completely consumed

Answer 24

Theoretical Yield

Question 25

refers to the ratio of actual yield to the theoretical yield

Answer 25

Percent Yield

Question 26

An excess reagent in a chemical reaction

Answer 26

the reactant that is left after chemical reaction is completed.

Question 27

limiting reagent

Answer 27

once it is totally consumed the reaction stops

Question 28

If the force (gas molecules) is increased

Answer 28

The pressure increases

Question 29

A weather balloon is heated from room temperature to 58ºC. As a result, the gas inside the weather balloon increases in volume

Answer 29

Charles Law

Question 30

The pressure inside a container of gas increase if more gas is added to the container because

Answer 30

there is an increase in the number of particles striking the wall of the container in the same period of time.

Question 31

When of one of the pressures of gas in the mixture increased the balloon will

Answer 31

Inflate

Question 32

describes a chemical property

Answer 32

Reactivity with water

Question 33

Atomic number – atomic mass

Answer 33

Neutrons