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Chemistry Intro

Total questions: 38

Worksheet time: 21mins

Name
Class
Date
1.
The state of matter that takes the shape of its container is....
a)
Gas
b)
Solid
c)
Liquid
d)
None of these
2.
Signs that a chemical change has occurred include
a)
a change in color
b)
the release of bubbles
c)
the production of an odor
d)
all of the above
3.
In a liquid, the molecules have a definite shape and a definite volume
a)
True 
b)
False
4.
What is the symbol for chlorine?
a)
C
b)
Ch
c)
Ce
d)
Cl
5.

How many atoms of Hydrogen are in this compound

a)

1

b)

2

c)

3

d)

4

6.
Which of these elements is a metal?
a)
argon
b)
carbon
c)
iron
d)
hydrogen
7.

Anything that has mass and takes up space is called

a)

matter

b)

element

c)

electron

d)

nucleus

8.
What is the chemical symbol for Lithium?
a)
H
b)
He
c)
Li
d)
N
9.
Elements in a ..................have similar chemical properties.  
a)
period
b)
group
c)
row
10.
These are found on the Periodic Table.
a)
Compounds
b)
Elements
c)
Mixtures
11.
Which of the following is an example of a chemical reaction?
a)
A marshmallow turning black when heated over a fire
b)
A powder dissolving in water to make lemonade
c)
An ice cube melting into a puddle of water
d)
Salt crystals being crushed into a powder
12.
Which is an example of a chemical reaction?
a)
paper cut into small pieces
b)
chocolate melting in a pan
c)
flour and sugar mixed in a bowl
d)
cookies baking in an oven
13.
Bread is toasted.  How do you know a chemical change happened?
a)
The temperature decreased
b)
The color changed
c)
It bubbled/fizzed
d)
A solid formed
14.
A change in the shape of an object is an example of _________________.
a)
a chemical change
b)
energy
c)
an endothermic change
d)
a physical change
15.
In a ___________change, a substance changes into a different substance.
a)
Physical
b)
Chemical
16.

The chemical formula for table salt is

a)

SiCl

b)

NaCl

c)

NaOH

d)

CaCl

17.

How many elements are in NaHCO3

a)

5

b)

4

c)

3

d)

1

18.
Water can dissolve many things so it is called the .....
a)
wonderful water
b)
cohesion
c)
liquid
d)
universal solvent
19.
Freezing point of water is
a)
100 degrees Celsius
b)
0 degrees Celcius
c)
0 degrees Fahrenheit
20.

What are the particles in a solid like?

a)

Far apart

b)

Wiggly and not close together

c)

Close together

d)

They don't have particles.

21.

What are the three states of matter?

a)

Melting, Freezing, and Particles

b)

Solid, Liquid, and Gas

c)

Ice Cube, Rock, and rock

d)

Three states of matter

22.

What causes objects to melt?

a)

cold

b)

heat

c)

sound

d)

stirring

23.

When will particles in a substance be moving the fastest?

a)

when the substance is cold

b)

when the substance is warm

c)

when the substance is hot

24.
How many elements are in C6H12O6?
a)
1
b)
2
c)
3
d)
4
25.
How many atoms of carbon (C) are in  C6H12O6?
a)
3
b)
6
c)
12
d)
24
26.

Is this an element or a compound?

H2O

a)

element

b)

compound

27.
Which is the correct formula for:
one carbon (C)
two oxygen (O)
a)
CO2
b)
CO
c)
C2O
d)
2CO
28.

A copper penny turning greenish after a few years. Is this an example of a chemical change or a physical change?

a)

Chemical Change

b)

Physical Change

29.

A gel ice pack getting cold after you put it in the freezer for an hour. Is this a chemical or a physical change?

a)

Chemical Change

b)

Physical Change

30.

I am a colorless, odorless gas produced by burning coal, oil and gasoline. I am found in fire extinguishers and aerosol cans.

a)

Carbon Dioxide

b)

Propane

c)

Helium

31.
A chemical change is different than a physical change because in a chemical change
a)
Chemicals are used
b)
Molecules do not physically touch
c)
A new substance is formed and in a physical change no new substance is formed
d)
The change can be seen but in a physical change it cannot
32.
Diamonds are a pure form of what element?
a)
Carbon
b)
Oxygen
c)
Silicon
d)
Silver
33.

CALCIUM

What is it's symbol on the periodic table?

a)

C

b)

Ca

c)

Cu

d)

Cl

34.

SODIUM

What is it's chemical symbol on the periodic table?

a)

S

b)

So

c)

N

d)

Na

35.

OXYGEN

What is it's symbol on the periodic table?

a)

O

b)

Ox

c)

Oy

d)

Og

36.

Living organisms always contain which element?

a)

O - oxygen

b)

C - carbon

c)

K - potasium

d)

H - hydrogen

37.

When particles collide, energy transfers from _______ moving particles to _______ moving particles.

a)

fast, slow

b)

slow, fast

38.

What happens when equal amounts of hot and cold water are mixed together?

a)

the temperature doesn't change

b)

the mixture gets warmer

c)

the mixture gets colder

d)

the final temperature is half of the sum of the starting hot & starting cold temperature

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