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Unit 1 Part 2 Review

Total questions: 25

Worksheet time: 15mins

Name
Class
Date
1.

How many elements are in C6H12O6?

a)

1

b)

2

c)

3

d)

4

2.

How many atoms of carbon (C) are in C6H12O6?

a)

3

b)

6

c)

12

d)

24

3.

How many TOTAL atoms are in:

H2SO4

a)

6

b)

5

c)

7

d)

3

4.

How many atoms of Sodium (Na) are in 6NaCl?

a)

1

b)

12

c)

3

d)

6

5.

How many nitrogen atoms are there?

a)

4

b)

8

c)

10

d)

20

6.
A 55-gram egg is placed in a pot. After the egg is boiled, which is most likely the mass of the egg?
a)
50 
b)
55 
7.
In a reaction A + B ----> C,  reactant A has 5g and product  C has 9g. How many grams does reactant B should have? 
a)
4g
b)
5g
c)
9g
d)
14g
8.
Anthony is performing an experiment. He adds 0.25 grams of baking soda to 5 grams of water and stirs. Anthony watches as the baking soda dissolves in the water. If Anthony weighs the water and baking soda solution, what will its mass be?
a)
4.75 grams
b)
5.0 grams
c)
5.25 grams
d)
7.5 grams
9.
If reaction starts with 20g of reactants it should produce 
a)
a total of 40g of products
b)
a total of 10g of products
c)
a total of 80 g of products
d)
a total of 20g of products
10.

Which of the models of a chemical reaction best represents the Law of Conservation of Mass?

a)

A

b)

B

c)

C

d)

D

11.

Which column is the Halogen Family

a)

A

b)

B

c)

C

d)

D

12.

Column D is called______?

a)

Noble gas

b)

Alkaline

c)

Rare Earths

d)

Metalloids

13.

Going down the Periodic Table the atomic size generally (a)  

14.

Which column has only one valence electron?

a)

A

b)

B

c)

C

d)

D

15.

Which of these elements have 3 valence electrons

a)

Sc

b)

Si

c)

In

d)

Ca

16.
Which subatomic particle has a positive (+) charge?
a)
Neutron
b)
Proton
c)
Electron
17.
Which subatomic particle has a negative (-) charge?
a)
Proton
b)
Electron
c)
Neutron
18.
Where is the nucleus located in an atom?
a)
Near the electron shells/levels
b)
Near the center of an atom
19.
Which subatomic particle has a neutral or no charge?
a)
Proton
b)
Electron
c)
Neutron
20.

The Atomic number is known as the _______

a)

Number of electrons in an atom

b)

Number of Protons in an atom

c)

Number of neutrons in an atom

d)

Number of Protons and electrons in an atom

21.

What is the Atomic Mass Number of the element mentioned above

a)

12

b)

6

c)

C

d)

16

22.
True or False - Protons and Neutrons have about the same mass.
a)
True - They have about the same mass
b)
False - They do not have about the same mass
23.

Which if the following is described as being pure substances?

a)

elements

b)

compounds

c)

elements and compounds

d)

mixtures

24.

What is the smallest part of a compound that retains the properties of that compound

a)

atom

b)

element

c)

Molecule

d)

mixture

25.

Which of the following describes a substance that has been physically combined and is NOT uniform throughout (you see the DIFFERENT parts that make it up)?

a)

Homogeneous Mixture

b)

Compound

c)

Heterogeneous mixture

d)

element

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