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6th grade Chem Unit

Total questions: 54

Worksheet time: 45mins

Name
Class
Date
1.

NaCl

a)

Element

b)

Compound

c)

Mixture

2.

H2

a)

Element

b)

Compound

c)

Mixture

3.

H2 + Mg

a)

Element

b)

Compound

c)

Mixture

4.

MgCl2

a)

Element

b)

Compound

c)

Mixture

5.

H2O

a)

Element

b)

Compound

c)

Mixture

6.

Mg

a)

Element

b)

Compound

c)

Mixture

7.
a)

Mixture

b)

Element

c)

Compound

8.
a)

Element

b)

Compound

c)

Mixture

9.
a)

Element

b)

Compound

c)

MIxture of elements and compounds

d)

Mixture of elements

10.
a)

Element

b)

Compound

c)

Mixture of elements and compounds

d)

Mixture of elements

11.
a)

Compound

b)

Mixture of elements and compounds

c)

Mixture of elements

d)

Mixture of compounds

12.
a)

Element

b)

Compound

c)

Mixture of elements

d)

Mixture of compounds

13.
a)

Elements

b)

Mixture of Elements

c)

Compound

d)

Mixture of Compounds

14.
What is sugar?
a)
element
b)
compound
c)
mixture
15.

Which element makes up MOST of the air we breathe?

a)

Carbon

b)

Nitrogen

c)

Oxygen

d)

Argon

16.

Which element is the second most abundant in Earth's crust?

a)

Oxygen

b)

Calcium

c)

Sodium

d)

Silicon

17.

What is this graph representing?

a)

Living Things

b)

Ocean

c)

Crust

d)

Atmosphere

18.

What is this graph representing?

a)

Ocean

b)

Living Things

c)

Atmosphere

d)

Crust

19.

What graph is represented?

a)

Living Things

b)

Ocean

c)

Crust

d)

Atmosphere

20.

What is this graph representing?

a)

Ocean

b)

Atmosphere

c)

Crust

d)

Living Things

21.

Which change describes a substance that changes shape, form, or appearance but is still the same substance?

a)

physical change

b)

chemical change

22.

What happens when a new substance is produced during a reaction?

a)

physical change

b)

chemical change

23.

Melting ice

a)

physical change

b)

chemical change

24.

Burning wood

a)

physical change

b)

chemical change

25.

broken glass

a)

physical change

b)

chemical change

26.

mixing baking soda and vinegar

a)

physical change

b)

chemical change

27.

Freezing Juice?

a)

physical Change

b)

chemical Change

28.

Cooking Pancakes

a)

Physical Change

b)

Chemical Change

29.

Melting Ice Cream

a)

Physical Change

b)

Chemical Change

30.
Green bananas turning yellow on their own as they ripen.
a)
Chemical Change
b)
Physical Change
31.
Which of the following is a good conductor of heat?
a)
Metal
b)
Nonmetal
c)
Metalloid
32.
If a material can easily be drawn into the shape of a wire, it is
a)
Ductile
b)
Magnetic
c)
Malleable
d)
Reactive
33.
Silicon is a semiconductor and has properties of both metals and nonmetals. What type of element is Silicon? 
a)
Metal
b)
Nonmetal
c)
Metalloid
d)
Pretty
34.
All of these properties describe metals except...
a)
malleable
b)
conductors
c)
brittle 
d)
shiny
35.
Which element is a metalloid?
a)
Titanium
b)
Selenium
c)
Potassium
d)
Polonium
36.
All of the following would classify an element as a metal except?
a)
Dull
b)
Luster
c)
Malleable
d)
Hard
37.

What is a subatomic particle with a positive charge that is in the nucleus of an atom?

a)

neutron

b)

proton

c)

electron

d)

valence electron

38.

What is a subatomic particle without an electric charge, located in the nucleus of an atom?

a)

neutron

b)

proton

c)

electron

d)

valence electron

39.

What is a subatomic particle with a negative charge? It is found in the electron cloud surrounding the nucleus.

a)

neutron

b)

proton

c)

electron

d)

electron cloud

40.

What is the number of protons in the nucleus of an atom that determines the chemical properties of an atom?

a)

mass number

b)

atomic mass

c)

atomic number

d)

atomic symbol

41.

What is the combined mass of all the protons and neutrons of an atom and is approximately equal to the number of protons and neutrons?

a)

atomic mass

b)

atomic number

c)

subatomic particles

d)

nucleus weight

42.
The number in the upper corner of an element tile (7 for nitrogen) is called _____
a)
the proton number
b)
the atomic number
c)
the electron number
d)
the mass number
43.
For a given element, the atomic number indicates the number of _____
a)
protons in the nucleus
b)
neutron in the nucleus
c)
electrons in the atom
d)
nucleons in the atom
44.
The nucleus contains _____
a)
only protons
b)
protons and neutrons
c)
protons and electrons
d)
electrons and neutrons
45.
How many Protons are in one atom of Lithium?
a)
3
b)
6
c)
7
d)
6.941
46.
How many Neutrons are in one atom of Lithium?
a)
6.941
b)
7
c)
3
d)
4
47.
How many Electrons are in one atom of Lithium?
a)
3
b)
6
c)
7
d)
6.941
48.

Which object is less dense?

a)

The fish because he is in the middle

b)

The cork because it is floating at the top of the water

c)

The rock because it is at the bottom

d)

The cork and the rock because they have the same about of atoms.

49.

What is the volume of object x?

a)

10.0 cm3

b)

20.0 cm3

c)

20.0 cm3

d)

25.0 cm3

50.
Calculate the density of the cube.
a)
2 g/cm3
b)
4 g/cm3
c)
6 g/cm3
d)
8 g/cm3
51.

Which box has a higher density?

a)

A

b)

B

c)

They are the same

52.

Calculate the density in the following question: A star has a mass of 15 g and a volume of 25 mL.

a)

0.7 g/mL

b)

0.6 g/mL

c)

0.5 g/mL

d)

0.4 g/mL

53.
Find the Volume
a)
428.4 cm3
b)
412.8 cm3
c)
404.2 cm3
d)
400 cm3
54.
How much water has been displaced in the image shown?
a)
80 mL
b)
100 mL
c)
20 mL
d)
60 mL

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