chapter one test

Question 1

In which phase does a substance have a definite volume but no definite shape? A) Solid, B) Liquid C) Gas D) Plasma

Answer 1

b

Question 2

in which phase does a substance have very fast moving particles that take the shape of it’s container?
a.) Solid b) Liquid c) Gas d) Plasma

Answer 2

C

Question 3

Which of the following is a physical property?

a) Capable of rusting in the air
b) reactivity to acid
c) Flammable
d) Boiling point

Answer 3

Boiling point

Question 4

When a substance changes from a liquid to a gas, this is called
a) boiling b) melting c) condensing d) freezing

Answer 4

A

Question 5

which of the following is NOT an example of a chemical reaction?
a) a body decomposing b) digestion of food c) deposition d) Burning wood

Answer 5

C

Question 6

which of the following is not found as a diatomic element in nature? a) Boron b) Oxygen c) Hydrogen d) fluorine

Answer 6

A

Question 7

a pure substance made up of only one type of atom is called an a) compound

b) element
c) homogeneous Mixture
d) heterogenous Mixture

Answer 7

B

Question 8

which of the following substances is dissolved in water?

a) HNO3 (s)
b) HNO3 (l)
c) HNO3 (g)
d) HNO3 (aq)

Answer 8

D

Question 9

Substances composed of atoms of 2 or mor different elements that are bonded are called: a) Diatomic elements b) Compounds
c) Homogenous Mixtures, d) Heterogeneous Mixtures

Answer 9

B

Question 10

Substance that are combined physically and can be physically separated are called: a) mixtures b) atoms c) Elements d) compounds

Answer 10

a

Question 11

Which of the following substances can’t be broken down by ordinary chemical means?

a) Water (H20)
b) Copper (Cu)
c) Isopropyl Alcohol (C3H80) or d) Glucose (C6H1206)

Answer 11

B

Question 12

which of the following is made up of only one type of atom?

a) NaF
b) N2
c) SiF4
d) MgI2

Answer 12

b

Question 13

what is the smallest unit of an element that still retains the elements properties?

a) electron
b) Atom
c) Proton or d) compound

Answer 13

b

Question 14

how many significant figures does 21,500 cm3 have?

a) 0
b) 3
c) 5
d) infinite

Answer 14

B

Question 15

the mass of a liquid substance is 0.95 g. Students measured the mass as 0.56g, 0.55g and 0.57g which best describes the students measurements? a) accurate but not precise, b) precise but not accurate c) both precise and accurate d) neither precise or accurate

Answer 15

B

Question 16

which piece of equipment is best to use to transfer a solid powder from one container to another?

a) scoopula b) Pipet
c) Test tube holder d) erlenmeyer flask

Answer 16

a

Question 17

which piece of equipment is best used for transferring small amounts of liquid?
a) Scoopula b) pipet c) test tube holder d) weigh paper

Answer 17

b

Question 18

what is the SI unit of Mass?

a) gram (g)
b) Kilogram (kg)
c) Newton (N)
d) Pound (lb)

Answer 18

B

Question 19

which piece of equipment can be used to hold a substance during heating? a) Beaker b) Erlenmeyer flask c) test tube
d) all of the above

Answer 19

D

Question 20

which piece of equipment is best to use for measuring volume of liquids?
a) Beaker b) graduated cylinder c) erlenmeyer flask d) volumetric flask

Answer 20

b

Question 21

when performing an experiment that creates a lot of fumes use the:
a) ventilator b) bunsen burner c) wafting technique d) Fume Hood

Answer 21

D

Question 22

the three ways a chemical can enter your body are:

a) absorption, touch, Ingestion
b) absorption, inhalation, ingestion
d) digestion, corrosion, consumption
d) abrasion, inhalation, smelling

Answer 22

b

Question 23

in which phase does a substance have particles that are very tightly packed? A) solid, B) Liquid C) Gas D) Plasma

Answer 23

A