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Accelerated CFA Chemistry Review

Total questions: 30

Worksheet time: 8hrs 30mins

Name
Class
Date
1.

In this chemical equation, the elements in red are the_______.

a)

Products

b)

Reactants

c)

Subscripts

d)

Coefficients

2.

Which formula has 6 atoms of Carbon, 12 atoms of Hydrogen, and 6 atoms of Oxygen.

a)
b)
c)
d)
3.

How many total atoms are in the product?

a)

10

b)

5

c)

7

d)

12

4.
What is a reactant?
a)
The starting substance
b)
The ending substance
5.
What is a product?
a)
The starting substance
b)
The ending substance
6.
Using the following chemical reaction
Hydrogen + Oxygen --> water
Identify the reactant(s).
a)
Hydrogen and Oxygen
b)
water
7.
Using the following chemical reaction
Hydrogen + Oxygen --> water
Identify the product(s).
a)
Hydrogen and oxygen
b)
water
8.
How many Hydrogen (H) atoms are in NH3O5
a)
3
b)
4
c)
5
d)
1
9.

Which substances will have the most density?

a)

The substances at the bottom

b)

The substances at the top

c)

The substances in the middle

d)

They all have the same density

10.

Which substances will have the least density?

a)

The substances at the bottom

b)

The substances at the top

c)

The substances in the middle

d)

They all have the same density

11.

Which of the following has the least density?

a)

The Bolt

b)

Ping Pong Ball

c)

Cherry Tomato

d)

Popcorn Kernel

12.

Which of the following has the most density?

a)

The Bolt

b)

Ping Pong Ball

c)

Cherry Tomato

d)

Popcorn Kernel

13.

Which of the following has the most density?

a)

Honey

b)

Corn Syrup

c)

100% Maple Syrup

d)

Milk

14.

Which of the following has the least density?

a)

Honey

b)

Corn Syrup

c)

100% Maple Syrup

d)

Milk

15.

Which of the following has the least density?

a)

Dish Soap

b)

Corn Syrup

c)

100% Maple Syrup

d)

Milk

16.
How many carbon atoms (C) are in a CO2 molecule?
a)
1
b)
2
c)
3
d)
0
17.
Which is the correct formula for:
 three hydrogen (H)
one sulfur (S)
four oxygen (O)
a)
H3SO4
b)
HSO4
c)
H4S3O
d)
H2O
18.
In an exothermic reaction, heat is ...
a)
taken in
b)
given out
19.

In an endothermic reaction, heat is ...

a)

taken in

b)

given out

20.
If a chemical reaction is EXOTHERMIC, the temperature would....
a)
Stay the same
b)
Increase
c)
Decrease
21.
During an endothermic reaction in a beaker if we are part of the surroundings and touched the beaker, it would feel _______. 
a)
Warm
b)
Cold
22.

A student mixed two chemicals to allow them to react. The temperature before the reaction was 25 ° C. The temperature after the reaction was 18° C. Which of the following is true?

a)

It is an exothermic reaction

b)

It is an endothermic reaction

23.
Frank has a paper clip. It has a mass of 9g and a volume of 3cm3. What is its density?
a)
3 g/cm3
b)
1/3 g/cm3
c)
27 g/cm3
d)
39 g/cm3
24.
Frank has an eraser. It has a mass of 4g, and a volume of 2cm3. What is its density?
a)
8 g/cm3
b)
2 g/cm3
c)
1/2 g/cm3
d)
24 g/cm3
25.
What is the formula for density?
a)
density = mass x volume
b)
density = mass / volume
c)
density = mass + volume
d)
density = mass - volume
26.

Which is the most dense?

a)

gasoline 0.7 g/ cm3

b)

lead 11.3 g/ cm3

c)

mercury 13.6 g/ cm3

d)

paraffin(wax) 0.87 g/ cm3

27.
If a reaction starts with a total 75g of reactants it should produce 
a)
a total of 40g of products
b)
a total of 75g of products
c)
a total of 180 g of products
d)
None of the above
28.
An oreo cookie weighs 20 grams.  It gets crushed into crumbs for a recipe.  How much do its crumbs weigh?
a)
15 grams
b)
25 grams
c)
20 grams
29.

Which of the models best represents CaCO3?

a)
b)
c)
d)
30.

Which chemical formula represents the above molecule?

a)

2CH4O1

b)

CCHO

c)

C2H6O

d)

OH5Ch2