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Chemistry Review

Total questions: 40

Worksheet time: 3600secs

Name
Class
Date
1.
Elements are made of 
a)
many types of atoms 
b)
the periodic table
c)
one type of atom 
d)
molecules 
2.
This subatomic particle of an atom has a POSITIVE charge.
a)
electron
b)
neutron
c)
proton
d)
amitron
3.
Protons and neutrons clump together to form the __________ of an atom.
a)
nucleus
b)
centrosome
c)
outer shell
d)
orbital
4.
This subatomic particle of an atom has NO charge.
a)
electron
b)
proton
c)
atom
d)
neutron
5.
This subatomic particle of an atom has a NEGATIVE charge.
a)
electron
b)
proton
c)
atom
d)
neutron
6.

The image shows the periodic grid of potassium. How many electrons are found in the potassium atom?

a)

19

b)

20

c)

39

d)

40

7.

Which part of an atom is represented by the blue circles?

a)

electrons

b)

neutrons

c)

protons

8.

How many elements are in C6H12O6?

a)

1

b)

2

c)

3

d)

6

9.

How many Hydrogen atoms are present in H20?

a)

2

b)

4

c)

1

d)

0

10.
Each column in the periodic table is called a _________ .
a)
period
b)
group
c)
cluster
d)
unit
11.
Periods on the periodic table are __________.
a)
Horizontal Rows
b)
Vertical Columns
12.

The central region of an atom where its neutrons and protons are is its

a)

nucleus

b)

electron cloud

c)

core

d)

center

13.

What is the number of protons that the element in this image contain?

a)

14

b)

7

c)

15

d)

18

14.

The number of protons is equal to the number of

a)

electrons

b)

neutrons

c)

isotopes

d)

nucleus

15.

How do you find the number of neutrons in an atom?

a)

Atomic Number

b)

Atomic Mass

c)

Atomic Mass - Atomic Number

d)

Atomic Number + Atomic Mass

16.

Where are most nonmetals located on the periodic table?

a)

in the bottom row

b)

on the left side and in the middle

c)

on the right side

d)

in the top row

17.

Which is NOT a property of metals?

a)

brittleness

b)

conductivity

c)

ductility

d)

luster

18.

Where are most metals on the periodic table?

a)

on the left side only

b)

on the right side only

c)

in the middle only

d)

on the left side and in the middle

19.

Iodine is a nonmetal. What is one property of iodine?

a)

conductivity

b)

dull appearance

c)

malleability

d)

ductility

20.

Elements in the same ________ have the most similar chemical reactivity.

a)

Chemical Symbol

b)

Period

c)

Family/Group

21.

Alkali metals are the _________ reactive family on the Periodic Table.

a)

Least

b)

Most

22.

Noble gases are the _________ reactive family on the Periodic Table.

a)

Least

b)

Most

23.

When elements are in the same ROW they are all in the same-

a)

Chemical Symbol

b)

Period

c)

Family

24.

When elements are in the same COLUMN they are all in the same-

a)

Chemical Symbol

b)

Period

c)

Family

25.

An element that has properties of both metals and nonmetals

a)

metalloid

b)

valence electron

c)

compound

d)

solid

26.
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
27.
Which is Chemical Equation is Balanced?
a)
CH₄+O₂------CO₂+2H₂O
b)
H₂+O₂-----2H₂O₄
c)
4Al+3O₂-----2Al₂O₃
28.
Is this equation balanced or unbalanced? 
2Fe2O3 + 3C --> 4Fe + 3 CO2
a)
balanced
b)
unbalanced
29.
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
30.

Definition of a solid:

a)

definite shape and definite volume

b)

indefinite shape and definite volume

c)

indefinite shape and indefinite volume

d)

definite shape and indefinite volume

31.

Definition of a liquid:

a)

definite shape and definite volume

b)

indefinite shape and definite volume

c)

indefinite shape and indefinite volume

d)

definite shape and indefinite volume

32.

Definition of a gas:

a)

definite shape and definite volume

b)

indefinite shape and definite volume

c)

indefinite shape and indefinite volume

d)

definite shape and indefinite volume

33.

Which of the following is true as you go from a solid to a gas?

a)

The atoms decrease in speed

b)

The atoms move closer together

c)

The atoms increase in speed

d)

The atoms do not change

34.

What happens as liquid iron cools?

a)

The atoms slow down and move further apart

b)

The atoms speed up and move further apart

c)

The atoms slow down and move closer together

d)

The atoms speed up and move closer together

35.
a)

Element

b)

Compound

c)

Homogeneous Mixture

d)

Heterogeneous Mixture

36.

What is CO2 and example of?

a)

element

b)

molecule

c)

compound

37.
Which of the following lists only elements?
a)
H2O + OH, MgCl2
b)
H2O, KF, Ne
c)
KCl, Ag, Au
d)
K, Cl, N
38.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture of elements
d)
mixture of compounds
39.

This image is a model of...

a)

an element

b)

a compound

c)

a homogenous mixture

d)

a heterogeneous mixture

40.

This picture is a model of...

a)

an element

b)

a compound

c)

a homogenious mixture

d)

a heterogeneous mixture.

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