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Elements, Compounds, and Mixtures Test

Total questions: 27

Worksheet time: 14mins

Name
Class
Date
1.
1. Which of the following statements about elements and compounds is accurate?
a)
A. Elements are many different types of atoms together but compounds are just one type of atom.
b)
B. Elements are pure substances that cannot be broken down physically but compounds are pure substances that can be broken down physically.
c)
C. Elements are not found on the Periodic Table but compounds are found on the Periodic Table.
d)
D. Elements are pure substances that cannot be broken down chemically but compounds are pure substances that can be broken down chemically.
2.
2. Which element is found in all organic compounds?
a)
A. Carbon (C)
b)
B. Nitrogen (N)
c)
C. Hydrogen (H)
d)
D. Oxygen (O)
3.
3. The air that surrounds us is categorized as which of the following?
a)
A. Element
b)
B. Compound
c)
C. Mixture
d)
D. Organic compound
4.
4. Which of the following could be the chemical formula for a compound?
a)
A. Na
b)
B. CO2
c)
C. H2 + O2
d)
D. Au
5.
5. Which of the following could be the chemical formula for an element?
a)
A. Si2
b)
B. H2O
c)
C. C + O2
d)
D. C6H12O6
6.
6. Which of the following could be the chemical formula for a mixture?
a)
A. Ne
b)
B. CO2
c)
C. H2
d)
D. NaCl + H2O
7.
7. How could you separate a mixture of sand and water?
a)
A. Pick out each sand grain
b)
B. Allow the water to evaporate
c)
C. Drink the water
d)
D. This mixture cannot be separated
8.

8. A(n) (a)   compound contains carbon and is typically found in living systems.

9.

9. A(n) (a)   consists of two or more substances that are together, but not chemically combined.

10.

10. A(n) (a)   is a pure substance that cannot be broken down chemically.

11.

11. A(n) (a)   mixture has a uniform composition and the same properties throughout.

12.

12. A(n) (a)   is a substance that consists of two or more elements chemically combined in a set ratio.

13.

13. A(n) (a)   mixture is not uniform in its composition and is made of different substances that remain physically separate.

14.
14. Compounds and mixtures contain two or more different types of atoms.
a)
True
b)
False
15.
15. Mixtures can be separated through processes such as filtration or evaporation.
a)
True
b)
False
16.
16. Compounds contain the exact same properties as the elements that make them up.
a)
True
b)
False
17.
17. Elements, compounds, and mixtures are all considered to be matter.
a)
True
b)
False
18.
18. The substances that make up mixtures undergo chemical changes when combined together to form mixtures.
a)
True
b)
False
19.

Is salt and pepper a homogeneous or heterogeneous mixture?

(a)  

20.

What type of mixture is steel?

(a)  

21.

What type of mixture is sand?

(a)  

22.

True or false: Water is a heterogeneous mixture.

(a)  

23.

True or False: Air is a compound.

(a)  

24.

Gold is a:

a)

compound

b)

element

c)

mixture

25.

What is vinegar?

a)

element

b)

compound

c)

mixture

26.

What is carbon dioxide?

a)

mixture

b)

element

c)

compound

27.

What is blood categorized as?

a)

Solution

b)

Mixture

c)

Compound

d)

Element

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