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Worksheets

Semester 1 Review

Total questions: 64

Worksheet time: 2hrs 34mins

Name
Class
Date
1.

How many sig figs are there in the following measurement?

100.00 m

a)

1

b)

3

c)

4

d)

5

2.

How many sig figs are there in the following measurement?

100000000 km

a)

1

b)

9

c)

10

d)

8

3.
How many significant figures: 0.012 km
a)
1
b)
2
c)
3
d)
4
4.
How long is this nail?
a)

7.0 cm

b)

7.30 cm

c)

7.3 cm

d)

7.35 cm

5.

The metric system unit for mass is

(select all correct answers)

a)

meter

b)

kilogram

c)

liter

d)

gram

6.

7,000 g = ____ kg

a)

70

b)

700

c)

7

d)

0.07

7.

648 g = ____ mg

a)

6,480

b)

64,800

c)

648,000

d)

64.8

8.

A type of mixture that you can't see the different parts.

a)

Homogeneous mixture

b)

Heterogeneous mixture

9.

A type of mixture where you can see the different parts and they can easily be separated into their different parts.

a)

Heterogeneous mixture

b)

Homogeneous mixture

10.

Match the following

a)

1.

Gas

b)

2.

Solid

c)

3.

Liquid

11.

At higher temperatures, particles in a substance move ​ (a)   and have ​ (b)   . At lower temperatures, particles in a substance move ​ (c)   ​ and have ​ (d)  

Choose from the below words
less energy
slower
faster
more energy
12.
Question Image

Match the state of matter to the correct location on the graph?

a)

Solid

1.

A to B

b)

Liquid

2.

C to D

c)

Gas

3.

E to F

13.
Question Image

Match the phase change to the correct location on the graph.

a)

Melting

1.

B to C

b)

Freezing

2.

C to B

c)

Evaporating

3.

D to E

d)

Condensing

4.

E to D

14.

Match the following

a)

Melting

1.

solid to liquid

b)

Freezing

2.

liquid to solid

c)

Condensation

3.

gas to liquid

d)

Evaporation

4.

liquid to gas

e)

Deposition

5.

gas to solid

15.

Liquid water is evaporating into a gas. What happens to the temperature of the water molecules during this time?

a)

remains unchanged

b)

increases

c)

decreases

16.

Liquid water is evaporating into a gas. What happens to the speed of the water molecules during this time?

a)

remains unchanged

b)

increases

c)

decreases

17.

Liquid water is evaporating into a gas. What happens to the spacing of the water molecules during this time?

a)

remains unchanged

b)

increases

c)

decreases

18.
Physical properties are
a)
properties that can be observed without changing the identity of the substance
b)
properties that describe how a substance changes into a completely different substance
19.

Chemical properties are

a)
properties that can be observed without changing the identity of the substance
b)
properties that describe how a substance changes into a completely different substance
20.

Match the following

a)

ability for heat to flow through a material

1.

conductivity

b)

resistance of a fluid to flow

2.

viscosity

c)

temperature at which a solid changes into a liquid

3.

melting point

d)

ability to be hammered into thin sheets

4.

malleability

e)

ratio of mass to volume

5.

density

21.

Which of the following are indicators of a chemical change?

a)

change in color

b)

change in temperature

c)

change in odor

d)

produces a gas (bubbles)

e)

change in state of matter

22.

Which of the following is/are conclusions based on Rutherford’s gold foil experiment?

a)

Atom is mostly empty space

b)

The nucleus is positively charged

c)

The atom has a small dense nucleus

d)

All answers are correct

23.

Who is the scientist who proposed the "planetary" model of an atom where the electrons orbit around the nucleus?

a)
Democritus
b)
Niels Bohr
c)
Ernest Rutherford
d)
Chadwick
24.

Match the charges to the subatomic particle.

a)

Electrons

1.

negative

b)

Neutrons

2.

neutral

c)

Protons

3.

positive

25.
A tiny but very dense, positively charged portion of the atom that holds most of the atomic mass
a)
Electron Shells
b)
Orbitals
c)
Electron Cloud
d)
Nucleus
26.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
27.

Look at this picture of Argon off the periodic table. Which of the following is true for this element?

a)

18 neutrons

b)

40 neutrons

c)

22 neutrons

d)

21.9 neutrons

28.

Two atoms of the same element with two different masses like Carbon-12 and Carbon-14 are called ​ (a)   . Their masses are different because the number of​ (b)   are different.

Choose from the below words
protons
ion
isotopes
neutrons
electrons
29.

When you have an atom, O-2 for example, this is called an ​ (a)   . This is because the number of ​ (b)   has changed.

Choose from the below words
ion
electrons
protons
isotope
neutrons
30.

Match the correct answer to each ion

a)

O-2

1.

gained 2 electrons

b)

Na+1

2.

lost 1 electron

c)

Ca+2

3.

lost 2 electrons

d)

F-1

4.

gained 1 electron

e)

N-3

5.

gained 3 electrons

31.

Iodine-131

The -131 tells you the

a)

number of protons.

b)

atomic mass.

c)

charge of the atom.

32.
Each column in the periodic table is called a _________ .
a)
period
b)
group
c)
cluster
d)
unit
33.
What's a valence electron?
a)
electrons in the second energy level
b)
electrons in the outermost energy level
c)
the atomic number
d)
electrons in the first level
34.

a grouping of elements based on similar properties, arranged by columns in the periodic table; also known as a group

a)

family

b)

period

c)

row

d)

isotope

35.

Which elements are to the LEFT of the zigzag?

a)

metals

b)

nonmetals

c)

metalloids

36.

Which of the following is an Alkali Metal?

a)

Magnesium

b)

Chromium

c)

Sodium

37.
Which of the following is an Alkaline Earth Metal? 
a)
Calcium
b)
Lithium
c)
Phosphorus
d)
Copper 
38.

Which of the following is a Halogen?

a)

Bromine

b)

Rubidium

c)

Beryllium

39.

Which of the following is a Noble Gas?

a)

Krypton

b)

Chlorine

c)

Gallium

40.

Which of the following groups is unreactive?

a)

Alkali

b)

Transition Metals

c)

Noble Gas

41.
As you move down the periodic table atoms get bigger.  This is because ____________.
a)
The atoms have more mass.
b)
The atoms have more protons.
c)
The atoms have more energy levels
d)
The atoms have more neutrons
42.
As you move across the periodic table atoms tend to get smaller because, ______________.
a)

the electrons are weaker

b)
the atoms have less mass
c)

the protons pull stronger on the electrons

d)

the protons push the electrons away

43.
Which of the following nuclear emissions has the greatest penetrating power?
a)
alpha
b)
gamma
c)
beta
d)

neutron

44.

time for half of the nuclei in a sample to decay

a)
half life
b)

half time

c)

half cycle

d)

half decay

45.
The splitting of a nucleus into smaller nuclei is
a)
fusion
b)
fission
c)
decay
d)
gamma radiation
46.

When forming an ionic bond, a metal atom​ (a)   electrons to form a(n)​ (b)   .

The nonmetal atom​ (c)   electrons to form a(n)​ (d)   .

Choose from the below words
loses
cation
gains
anion
47.
What elements generally make an ionic bond?
a)
metal and nonmetal
b)
2 or more nonmetals
c)
metal
d)
none of the above
48.
What elements generally make a covalent bond?
a)
metal and nonmetal
b)
2 or more nonmetals
c)
metal
d)
none of the above
49.
Which substance contains bonds that involve a transfer of electrons from one atom to another?
a)
CO2
b)
NH3
c)
KBr
d)
Cl2
50.

Which substance contains bonds that involve a sharing of electrons from one atom to another?

a)

CuO

b)

NH3

c)

KBr

d)

FeCl2

51.

Match the elements to their valence electrons.

a)

Mg

1.

2

b)

K

2.

1

c)

Si

3.

4

d)

O

4.

6

e)

F

5.

7

52.

Match the elements to their charges.

a)

Calcium

1.

+2

b)

Phosphorus

2.

-3

c)

Chlorine

3.

-1

d)

Cesium

4.

+1

e)

Sulfur

5.

-2

53.

If an atom ​ (a)   electrons, it will become negative.

If an atom ​ (b)   electrons, it will become positive.

Choose from the below words
gains
loses
destroys
creates
54.

Name the compound: N2O5.

a)

dinitrogen pentaoxide

b)

binitrogen pentaoxide

c)

nitrogen oxide

d)

pentanitrogen dioxide

55.

What would be the chemical formula of the cation Mg+2 combined with the anion N-3?

a)

Mg3N2

b)

Mg2N3

c)

Mg2N2

d)

Mg3N3

56.

Name the compound: MgCl2

a)

magnesium chloride

b)

magnesium dichloride

c)

magnesium (II) chloride

d)

manganese chloride

57.

What is the correct Lewis Dot Structure for ammonia NH3

a)
b)
c)
d)
58.

Which is the correct molecular structure for carbon dioxide?

a)
b)
c)
d)
59.

A substance that is formed as the result of a chemical reaction is a __________________

a)

Product

b)

Reactant

c)

Starters

d)

Enders

60.
The Law of Conservation of Mass states
a)
that matter exists in all states and reacts the same
b)
that matter can only be changed into new substances by introducing a catalyst
c)
that matter exists in the same state throughout any chemical change
d)
that matter cannot be created or destroyed and that the mass of the products must equal the mass of the reactants
61.
How many F atoms are in this compound?
6MgF2 
a)
2
b)
6
c)
8
d)
12
62.
The left side of the equation below is called
a)
Products
b)
Reactants
63.
The right side of the equation below is called the
a)
products
b)
reactants
64.
A number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction.
a)
Coefficient
b)
reactant
c)
subscript
d)
product 

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