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Q1 QSE Review

Total questions: 51

Worksheet time: 46mins

Name
Class
Date
1.
What do we call a substance consisting of a single atom?
a)
coefficient
b)
element
c)
compound
d)
molecule
2.
What do we call a chemical substance made up of 2 or more different types atoms bonded together?
a)
formula
b)
atom
c)
subscript
d)
compound
3.

All ____________ are made up of two or more atoms bonded together.

a)
atoms
b)
molecules
c)
electrons
d)
elements
4.

A recipe for a chemical substance is called a ________ _________.

a)
coefficent
b)
chemical formula
c)
Oxygen
d)
atom
5.
H2O2← ?
This number tells the number of atoms present.
a)
coefficient
b)
molecule
c)
subscript
d)
atom
6.
What does this image represent?
a)
Atom
b)
Element
c)
Molecule
d)
Marshmallows
7.

Carbon dioxide (CO2) contains how many atoms of oxygen?

a)
0
b)
1
c)
2
d)
3
8.
What is the picture displayed?
a)
atom
b)
element and molecule
c)
cells
d)
compound
9.

Classify the picture with the correct label.

a)

Element

b)

Compound

c)

Mixture of Elements

10.

A substance with two or more different types of atoms bonded together is called...

a)

An element

b)

An atom

c)

A compound

11.

This picture represents...

a)

An element and a molecule

b)

compound

c)

element only

12.

These are examples of-

a)

They are examples of a molecule and compound

b)

They are examples of molecules only

c)

They are examples of compounds only

13.

If an element symbol has no subscript next to it, then this indicates that there is only ________________ atom of this element in the chemical formula.

a)

1

b)

3

c)

4

d)

2

14.

How many elements are in this chemical formula?

NaOH

a)

1

b)

2

c)

3

d)

4

15.

The ________________ which are represented by a single uppercase letter, or represented by an uppercase letter followed by a lowercase letter. This tells you the types of elements in the compound.

a)

metals

b)

element symbols

c)

metalloids

d)

nonmetals

16.

How many elements are in this formula?

HNO3

a)

1

b)

2

c)

3

d)

4

17.

How many elements are in this formula?

Li2O

a)

1

b)

2

c)

3

d)

4

18.

What does the subscript in a chemical formula tell you?

a)

How many molecules are present

b)

How many atoms are present

c)

How many elements are present

d)

How many neutrons are present

19.

How many atoms of Carbon are in this formula? C6 H12O6C_{6\ }H_{12}O_6  

a)

6

b)

1

c)

12

20.

What is the total number of atoms in this formula? H2O2H_2O_2  

a)

2

b)

4

c)

3

21.

What is the total number of atoms in this chemical formula? C8H3NaBr12C_8H_3NaBr_{12}  

a)

18

b)

12

c)

25

d)

24

22.
How many atoms are there TOTAL in:
H2SO4
a)
6
b)
5
c)
7
d)
3
23.
How many atoms of Hydrogen are in this compound
a)
1
b)
2
c)
3
d)
4
24.
A pure substance that cannot be broken down into simpler substances.
a)
element
b)
compound
c)
molecule
d)
carbon dioxide
25.

Is this an element or a compound? CaSO4CaSO_4  

a)

Element

b)

Compound

26.

Which element has the greatest number of atoms? AgNO3AgNO_3  

a)

Silver

b)

Gold

c)

Nitrogen

d)

Oxygen

27.
Which is the correct formula for:
 three hydrogen (H)
one sulfur (S)
four oxygen (O)
a)
H3SO4
b)
HSO4
c)
H4S3O
d)
H2O
28.
The blue numbers in the image below represent ________
a)
I don't know, and don't want to try
b)
coefficients
c)
subscripts
d)
none of the answers are correct
29.

How many Oxygen atoms are in H2O?

a)

1

b)

2

c)

0

d)

4

30.

How many elements are present in this compound? (Careful!)

Mg2As3COHNi2

a)

2

b)

4

c)

6

d)

10

31.

How many atoms of Hydrogen are in this compound?

a)

1

b)

2

c)

3

d)

4

32.

Element or Compound? O6O_6  

a)

Element

b)

Compound

33.

Element or Compound? H6O5H_{6_{ }}O_5  

a)

Element

b)

Compound

34.

How many elements are in the compound Fe2O3?

a)

0

b)

1

c)

2

d)

3

35.
The substance being dissolved in a solution.
a)
sands
b)
solute
c)
solvent
d)
alloy
36.
The substance in which a solute is dissolved
a)
sands
b)
solvent
c)
alloy
d)
negative particles
37.
A solution is a ___________mixture.
a)
heterogeneous
b)
homogeneous
c)
concentration
d)
ionic
38.
Solutions are composed of __________ .
a)
salts and solutes
b)
solvents and salts
c)
solutes and alloys
d)
solutes and solvents
39.

A solution that contains all of the solute that it can hold at a given temperature.

a)

unsaturated solution

b)
saturated solution
c)

homogeneous solution

d)
diluted solution
40.
When one of the parts of the solution is water we call it _________. 
a)
water stuff 
b)
water mixture 
c)
aqua-man
d)
aqueous 
41.
If we are making Kool-aid with sugar, Kool-aid powder, and water, which part is the solvent?
a)
water
b)
powder
c)
sugar
d)
powder and sugar
42.

In Michael's science experiment with salt water, NaCl (salt) would be considered the ______.

a)

Solution

b)

Solute

c)

Solvent

d)

Solvation

43.

You can make a solution more concentrated by adding more __________.

a)
solute
b)
solvent
c)
water
d)

solution

44.

Avery is conducting a science experiment. When water is added to a solution it is called a ______________

a)

dilution

b)

concentration

c)

heterogeneous solution

d)

dissociation

45.

Luna and Daniel are conducting an experiment to see how much __________ can dissolve in a solvent to create saturated, unsaturated, and supersaturated solutions.

a)

sugar

b)

liquid

c)

solution

d)

solute

46.

Jackson is preparing a saltwater solution for his science experiment. Which of the following describes the concentration of the solution?

a)

The amount of solute in a given amount of solvent

b)

The temperature of the solution

c)

The color of the solution

d)

The volume of the solvent

47.

Which of the following is NOT a method to increase the rate of dissolution of a solid solute?

a)

Increasing temperature

b)

Decreasing surface area

c)

Stirring the solution

d)

Increasing surface area

48.

If a solid solute is broken into smaller pieces, how does this affect its dissolution rate?

a)

It decreases the rate

b)

It increases the rate

49.

What is the process of reducing the concentration of a solute in a solution called?

a)

Saturation

b)

Dilution

c)

Evaporation

d)

Precipitation

50.

What is the effect of stirring (agitation) on the rate of dissolution of a solid solute in an aqueous solution?

a)

It decreases the rate

b)

It increases the rate

51.

If you increase the temperature of a solution, what generally happens to the rate of dissolution of a solid solute?

a)

It decreases

b)

It increases

c)

It remains the same

d)

It doubles

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