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CA 1 6th Science Elements and Compound Review

Total questions: 36

Worksheet time: 24mins

Name
Class
Date
1.

Which of the following tables correctly identifies the elements and compounds?

a)

A

b)

B

c)

C

d)

D

2.

How many different elements are there in the chemical formula below? BaTeO3H2O

a)

4

b)

5

c)

6

d)

7

3.

Elements and compounds are pure substances because -

a)

They have constant properties.

b)

They are combinations of substances.

c)

They are mixtures of substances.

d)

Their compositions change.

4.

The graph below shows the gases that make up the Earth’s atmosphere. The most abundant elements in Earth’s atmosphere are made up of:

a)

An infinite amount of elements.

b)

A limited number of elements.

c)

No elements make up the atmosphere.

d)

One element makes up the entire atmosphere.

5.

The Following model is an example of a/an

a)

Compound

b)

Element

c)

Mixture

6.

The Following model is an example of a/an

a)

Compound

b)

Element

c)

Mixture

7.

The Following model is an example of a/an

a)

Compound

b)

Element

c)

Mixture

8.

Never Eat or drink in the lab unless instructed to do so by your instructor

a)

True

b)

False

9.

Safety goggles are not needed when working with baking soda and vinegar.

a)

True

b)

False

10.

If a glass beaker is broken, hide it from the teacher.

a)

True

b)

False

11.

Wear safety goggles when heating substances.

a)

True

b)

False

12.

I will act responsibly at all times in the science lab and classroom

a)

True

b)

False

13.
Which of the following is not a compound?
a)
HCl
b)
Cl
c)
NaCl
d)
CO2
14.

Which of the following could be a symbol on the periodic table of elements?

a)

JZ

b)

jz

c)

Jz

d)

JZa

15.
What cannot be broken down into other substances?
a)
Compound
b)
Mixture
c)
Solids
d)
Element
16.
How many elements are represented in the compound?
Na2CO3
a)
1
b)
2
c)
3
d)
4
17.

What is the most abundant element in the atmosphere?

a)

oxygen

b)

hydrogen

c)

nitrogen

d)

helium

18.

Both elements and compounds are pure substances.

a)

Agree

b)

Disagree

19.
This diagram represents a _____.
a)
pure substance that is a compound
b)
mixture of elements
c)
pure substance that is an element
d)
mixture of compounds
20.
What should you do if you break glass in the lab?
a)
Tell the teacher.
b)
Sweep up the glass.
c)
Pick up the glass with your hands.
d)
Ignore it; the teacher will clean it up when she sees it later.
21.

Which of the following is an example of a COMPOUND?

a)

Cobalt - Co

b)

Ammonia - NH3

c)

Carbon - C

d)

Lithium - Li2

22.

Which of the following is an example of an ELEMENT?

a)

Water - H2O

b)

Salt - NaCl

c)

Neon - Ne

d)

Methane - CH4

23.

Match the following vocabulary

a)

Atom

1.

The smallest part of a chemical element

b)

Molecule

2.

2 or more atoms held together by a chemical bond

c)

Element

3.

A pure substance represented by a chemical symbol

d)

Compound

4.

2 or more elements combined chemically

24.
Is sugar (C12H22O11) an element or a compound?
a)
Element
b)
Compound
25.
Is Iron (Fe) an element or a compound?
a)
Element
b)
Compound
26.

Elements only

a)

b)

c)

d)

27.
a)

pure element

b)

heterogeneous mixture

c)

homogeneous mixture

d)

pure compound

28.
What is made up two or more elements that are chemically combined?
a)
Element
b)
Mixture
c)
Compound
d)
Solids
29.
a)
1
b)
2
c)
3
d)
4
30.
a)
1
b)
2
c)
3
d)
4
31.
How many elements are represented in the compound?
Na2CO3
a)
1
b)
2
c)
3
d)
4
32.

What has mass and takes up space?

(a)  

33.

What is the smallest particle of matter?

a)

a cell

b)

an element

c)

an atom

d)

a proton

34.

What is a pure substance that contains only 1 type of atom?

a)

an electron

b)

an element

c)

compound

d)

molecule

35.

What is a pure substance containing 2 or more different atoms?

a)

electron

b)

element

c)

compound

d)

proton

36.

two or more different elements chemically bonded together, in a set ratio

a)

element

b)

compound

c)

molecule

d)

chemical bond

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