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Unit 2 CCA Review Elements and Compounds

Total questions: 42

Worksheet time: 31mins

Name
Class
Date
1.

Which Element is found only in Living Matter and the Oceans?

(a)  

2.

Which Element is found only in Living Matter and the Atmosphere? 

(a)  

3.

Which Element is found in Oceans and the Atmosphere?

(a)  

4.

What Elements are found in the following Compound? CaF2

a)

Calcium

b)

Carbon

c)

Flourine

d)

Oxygen

5.

What Elements are found in the following Compound? CoClAl2

a)

Cobalt

b)

Chlorine

c)

Flourine

d)

Aluminum

e)

Carbon

6.

What Elements are found in the following Compound? CONHe2

a)

Cobalt

b)

Carbon

c)

Oxygen

d)

Nitrogen

e)

Helium

7.

How many ATOMS are found in the following Compound? H4N2He2

(a)  

8.

How many ATOMS are found in the following Compound? O3HHe5

(a)  

9.

How many ATOMS are found in the following Compound? Na4HeS2

(a)  

10.

Which of the following about an 

ELEMENT is NOT TRUE?

a)

Made from a Mixture

b)

A Pure Substance

c)

Represented by a symbol

d)

Make up all Matter on Earth

11.

Which of the following is NOT an element? 

But is a compound…

a)

Water

b)

Fluorine

c)

Cobalt

d)

Gold

12.

Which of the following is NOT an element? 

But is a compound…

a)

Helium

b)

Neon

c)

Salt

d)

Carbon

13.

Which of the following is NOT an element? 

But is a compound…

a)

Nickel

b)

Lithium

c)

Silver

d)

Hydrogen Peroxide

14.

When a Chemical Change occurs, sometimes you can see a solid (a)   form.

15.

Oxygen is the ____ ________ Element on our planet.

a)

Most Abundant

b)

Least Abundant

c)

Really Cool

16.

When an Iron Nail rusts, the mass....

a)

Increases

b)

Decreses

c)

Stays the same

d)

Disappears

17.

Hydrogen

a)

N

b)

Na

c)

Au

d)

H

e)

He

18.

Gold

a)

N

b)

Na

c)

Au

d)

H

e)

He

19.

Nitrogen

a)

N

b)

Na

c)

Au

d)

H

e)

He

20.

Helium

a)

N

b)

Na

c)

Au

d)

H

e)

He

21.

Sodium

a)

N

b)

Na

c)

Au

d)

H

e)

He

22.

Chlorine

a)

N

b)

Na

c)

Au

d)

H

e)

Cl

23.

Aluminum

a)

A

b)

Al

c)

Au

d)

Am

e)

AL

24.

Cobalt

a)

C

b)

Co

c)

CO

d)

c

e)

Ct

25.

When you are testing to see how a substance REACTS with something else, you are looking for its....

a)

Chemical Properties

b)

Physical Properties

c)

Compounds

d)

Elements

26.

When you are testing a substance using your sense, and you are NOT destroying matter, you are looking for its....

a)

Chemical Properties

b)

Physical Properties

c)

Compounds

d)

Elements

27.

Which one of these is a Physical Property and NOT a Chemical Property?

a)

Electrical Conductivity

b)

Flammability

c)

If it reacts with water

d)

If it reacts with the Sun

28.

How many Elements are on the Periodic Table?

a)

108

b)

113

c)

118

d)

100

29.

If something goes wrong during a Lab experiment, what is the first thing you should do?

a)

Tell the Teacher

b)

Just fix it yourself

c)

Ask 3 others before the teacher

d)

Grab the dustpan and get to work

30.

Which one is NOT evidence of a Chemical Change? 

a)

Gas bubbles Produced

b)

Change of states of matter

c)

Unexpected Change of color

d)

A solid (Precipitate) Forms

e)

It created a New Substance

31.

Elements are made up of ___ type(s) of atoms.

a)

0

b)

1

c)

2

d)

3

32.

Hydrogen Chloride

a)

Element

b)

Compound

33.

Iron

a)

Element

b)

Compound

34.

Water

a)

Element

b)

Compound

35.

Hydrogen Peroxide

a)

Element

b)

Compound

36.

Baking Soda

a)

Element

b)

Compound

37.

Silver

a)

Element

b)

Compound

38.

A Compound is made up of two or more (a)  

39.

If you see something on Fire…What type of change is taking place?

a)

Chemical Change

b)

Physical Change

c)

Chemical Property

d)

Physical Property

40.

This small number to the right of an Element tells you how many of atoms of that Element are included in the Molecule.

a)

Subscript

b)

Postscript

c)

Megascrpit

d)

numberscript

41.

Draw the Chemical formula for Water

42.

How would you show a compound with 4 Hydrogen atoms and 2 Oxygen Atoms?