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HOMS Review: Mid-Year Exam

Total questions: 70

Worksheet time: 1hrs 2mins

Name
Class
Date
1.

is a chemical property of a material.

a)
Malleability
b)
Ductility
c)
Flammability
d)
Melting point
2.

What determines the physical and chemical properties of matter?

a)

The type of reactions the matter is involved in

b)

The type of atoms that make up the matter and their arrangement

c)

The state of matter (solid, liquid, gas, plasma)

d)

The temperature and pressure conditions the matter is exposed to

3.

What is the density of water?

a)

0.5 g/cm³

b)

1 g/cm³

c)

1.5 g/cm³

d)

2 g/cm³

4.

What is the equation to calculate density?

a)

D = volume / mass

b)

D = mass * volume

c)

D = mass / volume

d)

D = mass + volume

5.

If an object has a mass of 200 grams and a volume of 600 cm³, what is the density? g/cm³

a)
0.33 g/cm³
b)

0.5 g/cm³

c)

1.5 g/cm³

d)

2 g/cm³

6.
The water is ______ dense than the boat
a)
more
b)
less
c)
equally
7.
Which tool would be used to measure the mass of an object?
a)
balance
b)
graduated cylinder
c)
meter stick
d)
spring scale
8.
Definition of Physical property
a)
properties are those that can be observed without changing the identity of the substance
b)
Properties that describe how a substance changes into a completely different substance
c)
only observations that can be measured quantitatively
d)
Only observations that can be made qualitatively
9.
Which of the following is NOT matter?
a)
Air
b)
Oxygen
c)
Cells
d)
Gravity
10.
True or False:  The density of a specific type of material never changes.  
a)
True
b)
False
11.
What units are used to measure Density?
a)
cm3/g
b)
g
c)
g/cm3
d)
cm3
12.
Put the liquids in order from most dense to least dense?
a)
4, 3, 2, 1
b)
1, 2, 3, 4
c)
3, 4, 2, 1, 
d)
4, 3, 1, 2
13.

A graduated cylinder is used to measure...

a)

Volume

b)

mass

c)

weight

d)

density

14.

Which box has a higher density?

a)

A

b)

B

c)

They both have the same density.

15.

Light

a)

Matter

b)

Not Matter

16.

Sound

a)

Matter

b)

Not Matter

17.

atoms

a)

matter

b)

not matter

18.

What subatomic particle is the arrow pointing towards?

a)

Proton

b)

Neutron

c)

Electron

19.

The majority of the mass of an atom is found in the

a)

Proton

b)

Neutron

c)

Electron

d)

Nucleus

20.

The smallest unit of matter is a(n)

a)

molecule

b)

element

c)

atom

d)

compound

21.

What subatomic particle is the arrow pointing towards?

a)

Proton

b)

Neutron

c)

Electron

22.

Electrons have a ________ charge.

a)

Positive

b)

Negative

c)

Neutral

23.

What subatomic particle determines the element of the atom?

a)

Proton

b)

Neutron

c)

Electron

24.

What subatomic particle is the arrow pointing towards?

a)

Proton

b)

Neutron

c)

Electron

25.

Atoms are mostly _________ space.

a)

Crowded

b)

Empty

c)

Outer

d)

Filled

26.

The atomic number tells you what?

a)

number of electrons

b)

number of protons

c)

number of neutrons

d)

both electrons and protons in an atom.

27.

The periodic table is organized into columns called _______ and rows called ______.

a)

groups and periods

b)

periods and groups

c)

categories and periods

d)

categories and groups

28.

The chart that shows the arrangement of elements in order by their atomic number

a)

Electron Cloud

b)

Periodic Table

c)

amu

d)

Atomic Mass

29.

The sum of the protons and neutrons in the nucleus of an atom

a)

Atomic Number

b)

Compound

c)

Electrons

d)

Mass Number (also called Atomic Mass)

30.

The part of the atom that determines the identity of the atom is the ____________.

a)

proton

b)

nucleus

c)

electron

d)

neutron

31.

_________are not good conductors of heat or electricity.

a)

Metals

b)

Metalloids

c)

Nonmetals

32.

The blue elements are called 

a)

metals

b)

nonmetals

c)

metalloids

d)

noble gases

33.

The elements along the staircase are called 

a)

metals

b)

nonmetals

c)

metalloids

d)

noble gases

34.

What does the 1.00794 stand for?

a)

Hydrogen

b)

atomic number

c)

atomic mass

d)

atomic explosion

35.

The total number of protons and neutrons in the nucleus of an atom

a)

Atomic Number

b)

Mass Number

c)

Atomic Theory

d)

Electron Cloud

36.

All matter is made of _________.

a)

energy 

b)

atoms 

c)

electrons 

d)

compounds 

37.

What is the atomic number of Boron?

a)

5

b)

11

c)

6

38.

What is the atomic mass of Boron?

a)

5

b)

11

c)

6

39.

How many protons does Boron have?

a)

5

b)

11

c)

6

40.

How many electrons does Boron have?

a)

5

b)

11

c)

6

41.
How many neutrons does Boron have?
a)
5
b)
11
c)
6
42.
How many protons does Sodium have?
a)
11
b)
23
c)
12
43.
What is the atomic number of sodium? 
a)
11
b)
23
c)
12
44.

Allows heat or electricity to go through

a)

insulator

b)

conductor

c)

luster

d)

ductile

45.

Able to be drawn into wire is

a)

malleable

b)

insulator

c)

luster

d)

ductile

46.
How is the Periodic Table arranged?
a)
Increasing atomic mass
b)
Increasing atomic number
c)
Decreasing atomic mass
d)
Decreasing atomic number
47.

Elements in which group almost never react with other elements?

a)

Noble Gases

b)

Metalloids

c)

Nonmetals

d)

Alkali Earth Metals

48.

Where are the least reactive elements on the periodic table located?

a)

The top of the periodic table

b)

The bottom of the periodic table

c)

The far left side of the periodic table

d)

The far right side of the periodic table

49.

An element on the far left side of the periodic table would be

a)

very reactive

b)

not reactive at all

c)

it depends

50.

A formula is used to represent a __________.

a)

element

b)

compound

c)

mixture

51.

H2O

a)

element

b)

compound

c)

mixture

52.

Mud

a)

element

b)

compound

c)

mixture

53.

How would you classify the matter in the picture above?

a)

Element

b)

Compound

c)

Homogeneous Mixture

d)

Heterogeneous Mixture

54.

How would you classify the matter in the picture above?

a)

Element

b)

Compound

c)

Homogeneous Mixture

d)

Heterogeneous Mixture

55.
This picture represents: 
a)
Element
b)
Compound
c)
Mixture of Elements
d)
Mixture of Compounds
56.
This picture represents: 
a)
Element
b)
Compound
c)
Mixture of Elements
d)
Mixture of Compounds
57.

What type of substance is being modeled here?

a)

pure substance of one element

b)

mixture of two elements

c)

mixture of two compounds

d)

pure substance of one compound

58.
Is burning wood a chemical or physical change?
a)
chemical
b)
physical
59.
Is melting ice a chemical or physical change?
a)
chemical
b)
physical
60.
Is spoiling food a physical or chemical change?
a)
phyiscal
b)
chemical
61.

Rusting metal is an example of a ____ change.

a)

chemical

b)

phase

c)

state

d)

physical

62.
Which is NOT an indication of a chemical change?
a)
temperature change
b)
formation of a precipitate
c)
shape change
d)
production of light
63.
Properties that describe how a substance reacts with other substances are called?
a)
Chemical properties
b)
Physical properties
64.
Is Gatorade powder dissolving in water physical or chemical change?
a)
Physical 
b)
Chemical
65.

One of the signs of a chemical reaction taking place is:

a)

Bubbles are produced

b)

Reactants are not combining

c)

Products are not forming

d)

Color is not changing

66.

In NH3, how many Nitrogen's are there?

a)

1

b)

2

c)

3

d)

4

67.

According to the law of conservation of mass, which statement is true?

a)

The atoms of the reactants and products are different

b)

The atoms of the reactants and products are equal

c)

The subscripts must be the same

d)

The compounds must be the same

68.

Does this follow the law of conservation of mass?

a)

Yes, because there are the same number of atoms.

b)

Yes, because there are not the same number of atoms.

c)

No, because there are the same number of atoms.

d)

No, because there are not the same number of atoms.

69.

Which equation follows the law of conservation of mass?

a)

Na + Cl2 --> NaCl

b)

Na + Cl2 --> 2NaCl

c)

2Na + Cl2 --> NaCl

d)

2Na + Cl2 --> 2NaCl

70.

This chemical equation represents what happens when a nail rusts: 4Fe + 3O2 –› 2Fe2O3. The total mass after the reaction is

a)

not considered before the reaction.

b)

5 times less than before the reaction.

c)

exactly the same as before the reaction.

d)

about twice as much as before the reaction.

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