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Chem exam review

Total questions: 75

Worksheet time: 2hrs 31mins

Name
Class
Date
1.

Between which points is the temperature of the substance remaining constant?

a)

A-B only

b)

A-B, C-D, and E-F

c)

B-C only

d)

B-C and D-E

2.

__________ show the change in state of matter as heat is added.

a)

Phase diagrams

b)

Heating curves

c)

Density graphs

d)

Temperature plots

3.

Which letter indicates where water is in both the solid and liquid phase at the same time?

a)

A

b)

B

c)

C

d)

D

e)

E

4.

A measure of the average kinetic energy of the particles in an object is called

a)

Heat

b)

Temperature

c)

Kinetic energy

d)

Enthalpy

5.

Describe the substance at letter A.

a)

Solid

b)

Liquid

c)

Melting

d)

Evaporating

6.

In a heating curve, diagonal lines indicate temperature is __________, while flat lines indicate temperature is __________.

a)

Constant, changing

b)

Changing, constant

7.

Heat __________ depend on the amount of substance, while temperature __________.

a)

Does not, does

b)

Does, does not

8.

What is the freezing point of the substance?

a)

0oC

b)

60oC

c)

120oC

d)

180oC

9.
The graph shows a cooling curve for an unknown substance.  What is happening during segment DE?
a)
boiling
b)
condensation
c)
freezing
d)
melting
10.

SI Unit of Length

a)

Meters

b)

Kilograms

c)

Mole

d)

Kelvin

e)

Ampere

11.

SI Unit of Temperature

a)

Meters

b)

Kilograms

c)

Mole

d)

Kelvin

e)

Ampere

12.

SI Unit of Mass

a)

Meters

b)

Kilograms

c)

Mole

d)

Kelvin

e)

Ampere

13.

SI Unit of Time

a)

Meters

b)

Kilograms

c)

Seconds

d)

Kelvin

e)

Ampere

14.

Volume

a)

The amount of space an object takes up

b)

A measure of how close a series of measurements are to one another

c)

Distance between 2 points

d)

The amount of matter in an object

15.

Grams are a unit of

a)

Mass

b)

Volume

c)

Length

d)

Temperature

16.
Each column in the periodic table is called a 
a)
period
b)
group
c)
cluster
d)
unit
17.
Elements that have similar chemical properties have the same number of 
a)
protons
b)
valence electrons
c)
neutrons
d)
electrons
18.

Elements in which group number have 5 valence electrons?

a)

group 1A

b)

group 2A

c)

group 3A

d)

group 5A

19.

Elements in which group number have 6 valence electrons?

a)

group 7A

b)

group 6A

c)

group 3A

d)

group 5A

20.

Elements in which group number have 1 valence electron?

a)

group 1A

b)

group 6A

c)

group 3A

d)

group 5A

21.

I am malleable

a)

Metal

b)

Nonmetal

c)

Metalloid

22.

I am shiny

a)

Metal

b)

Nonmetal

c)

Metalloid

23.

This word is used to describe a substance that breaks apart easily and is weak and fragile

a)

Conductivity

b)

Ductile

c)

Malleable

d)

Brittle

24.

Where are the metalloids located on the Periodic Table?

a)

On the right

b)

On the left

c)

On the stairsteps

25.

Where are the nonmetals located on the Periodic Table?

a)

On the right

b)

On the left

c)

On the stairstep

26.
Which is an alkali metal?
a)

Mg-Magnesium

b)

Fe-Iron

c)

K-Potassium

d)

Ba-Barium

27.
Which is a halogen?
a)

Helium

b)

Iodine

c)

Oxygen

d)

Xenon

28.

Melting Point?

a)

physical

b)

chemical

29.

Odor?

a)

physical

b)

chemical

30.

density?

a)

physical

b)

chemical

31.

Crushing rocks?

a)

physical

b)

chemical

32.

Food Digestion?

a)

physical

b)

chemical

33.

chemical explosion?

a)

physical

b)

chemical

34.
How many protons does this isotope of titanium have?
a)
48
b)
22
c)
26
d)
70
35.
How many electrons does a Copper atom have?
a)
63
b)
29
c)
92
d)
34
36.
An element is defined by its number of 
a)
protons
b)
electrons
c)
neutrons
d)
protons + electrons
37.

Isotopes of an element have a different number of...

a)

Protons

b)

Neutrons

c)

Electrons

d)

Mass

38.

a)

HETEROGENEOUS

b)

HOMOGENEOUS

39.

a)

HETEROGENEOUS

b)

HOMOGENEOUS

40.

a)

HETEROGENEOUS

b)

HOMOGENEOUS

41.
How do the following two elements bond together?
Cr3+  O2-         
a)
CrO
b)
Cr3O2
c)
Cr2O3
d)
CrO3
42.
If an atom becomes an ion with a 2+ charge, what does that mean?
a)
It has lost 2 electrons
b)
It has gained 2 electrons
c)
The atom is in period 2
d)
The atom has an atomic # of 2
43.
What is the formula for copper(I) sulfate?
a)
Cu(SO3)
b)
Cu(SO4)
c)
Cu2(SO3)
d)
Cu2(SO4)
44.

Hydrogen nitrite (nitrous acid)

a)
H2NO3
b)
HNO3
c)
HNO2
d)
H2NO2
45.
Name this compound: 
Ca(CO3)
a)
Calcium carbon oxide
b)
Calcium (II) carbonate
c)
Calcium carbonate
d)
Carbonate (I) calcide
46.
phosphorus trichloride
a)
KCl3
b)
PCl3
c)
K3Cl
d)
P3Cl
47.
SiCl4
a)
silicon tetrachloride
b)
silicon quadchloride
c)
monosilicon tetrachloride
d)
silicon chloride
48.
There are 4 different types of subshells (orbitals) s,p,d,f.
a)
true
b)
false
49.

Each orbital can hold how many electrons?

a)

5

b)

4

c)

8

d)

2

50.
How many electrons can the first energy level hold?
a)
1
b)
2
c)
8
d)
0
51.
Where are electrons of an atom found?
a)
Nucleus
b)
Electron Cloud
c)
Some are in the nucleus and some in the electron cloud.
d)
They are moving everywhere.
52.

Which of the following is a positively charged particle found in the nucleus of an atom?

a)

Electron

b)

Proton

c)

Neutron

d)

Quark

53.

Which particle carries no charge?

a)

Neutrons

b)

Electrons

c)

Protons

54.
What is the electron configuration of calcium?
a)
2.8.8.2
b)
2.8.10
c)
20
d)
2.18.2
55.

Which of the following will have similar properties to 1s2 2s2 2p6 3s2 3p2?

a)

carbon

b)

calcium

c)

chlorine

d)

cesium

56.

When acids are mixed with water, they release ​ (a)   ions.

Choose from the below words
hydrogen (H+)
hydroxide (OH-)
57.

Determine the type and kind of reaction

Al + FeCl2 → AlCl3 + Fe

(a)  

58.

Balance the following equation

Al + FeCl2 → AlCl3 + Fe

(a)  

59.

Determine the type and kind of reaction

H2CO3 + NaOH → Na2CO3 + H2O

(a)  

60.
a)
Beryllium
b)
Boron
c)
Nitrogen
d)
Helium
61.
a)
Helium
b)
Lithium
c)
Nitrogen
62.

Classify the following molecule as polar or nonpolar: HCl

a)

Polar

b)

Nonpolar

63.

Classify the following molecule as polar or nonpolar: F2

a)

Polar

b)

Nonpolar

64.

If you check your measuring equipment and calibrate it to make sure it's properly zeroed, your results will be more...

a)

Accurate

b)

Reliable

c)

Precise

d)

Fair

65.

Accuracy -

a)

How close measurements are to one another

b)

How close measurements are to the true or accepted value

c)

How close marked units are on a ruler

d)

How close measurements are repeated

66.

Precision -

a)

How close measurements are to one another

b)

How close measurements are to the true or accepted value

c)

How close marked units are on a ruler

d)

How close measurements are repeated

67.
Theoretical yield = 73g
Actual yield = 62g
Calculate the percent yield.
a)
1.16%
b)
116%
c)
85%
d)
76%
68.

2H2  +   O2  →  2H2O How many moles of oxygen are needed if 8 moles H2 are used?

a)
2
b)
4
c)
6
d)
8
69.
CH4 + 2 O2 → CO2 + 2 H2O
How many moles of carbon dioxide are produced from the combustion of 110 g of CH4?
a)
13.7 mol
b)
2.75 mol
c)
6.11 mol
d)
6.85 mol
70.

What letter on the diagram represents the substance only in the gas phase?

a)

A

b)

B

c)

C

d)

D

71.

What letter on the diagram represents a substance only in the liquid?

a)

A

b)

B

c)

C

d)

D

72.

What letter on the diagram represents the triple point?

a)

A

b)

B

c)

C

d)

D

73.

What letter on the diagram represents a substance only in the solid phase?

a)

A

b)

B

c)

C

d)

D

74.

What is the melting point of this substance at 1 ATM of pressure?

a)

40

b)

60

c)

100

d)

110

75.

What is the boiling point of this substance at 1 ATM of pressure?

a)

40

b)

60

c)

100

d)

110

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