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Science 7 - Quiz 1 (Pure Substances and Mixtures)

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SINALOC NATIONAL HIGH SCHOOL

SCIENCE 7
QUIZ
JAEN KIETH F ROCIOS
TEACHER - I
1. Which of the following is the simplest form of substance?

A chemical formula

B compound

C element

D mixture

QUIZ
2. Which of the following is NOT an example of compound?

A Ammonia

B Helium gas

C Hydrogen peroxide

D Table sugar

QUIZ
3. Which of the following statements is TRUE about elements
and compounds?
A homogeneous in nature

B simplest form of matter

C commonly naturally occurring materials

D can be broken down into simpler substances

QUIZ
4. Which of the following substances is an element?

A Carbon Dioxide

B Iron

C Salt

D Sugar

QUIZ
5. Which of the following describes an element?
A The simplest substance

B It can be broken down into other types of substances.

C It can be separated through a chemical process.

D It is composed of two or more types of atoms

QUIZ
6. Which of the following statements correctly describes a
compound?
A Can be broken down into a simpler type of matter by chemical means.

B Has a unique property that are different from the properties of its individual elements

C Composed of atoms of two or more elements that bond together.

D Composed of two atoms that bond together.

QUIZ
7. Which of the following will be the result of compound if
Hydrogen gas and oxygen gas combine?
A Alcohol

B Salt

C Sugar

D Water

QUIZ
8. Which of the following is correctly matched?

A Gold: Element; Silver: Compound

B Oxygen: Element; Water: Compound

C Sugar: Element; Salt: Compound

D Water: Element; Hydrogen: Compound

QUIZ
9. Which of the following is NOT an element?

A Na

B Fe

C Pz

D He

QUIZ
10. Which of the following CANNOT be broken down into
simple substance?
A chemical formula

B compound

C element

D mixture

QUIZ
11. What are the two (2) classes of matter?

A atom and molecule

B element and compound

C plant and animals

D pure substance and mixture

QUIZ
12. Which is true regarding water?

A compound of element

B element of gases

C mixture of gases

D substance of gases

QUIZ
13. What is the difference between a substance and a
mixture?
A Substance can be separated while mixture cannot be separated.

B Substance has many components while mixture has one only.

C Substance is heterogeneous while mixture is homogeneous

D Substance is pure while mixture is impure.

QUIZ
14. To separate salt from water in a seawater mixture, what
process is used?
A condensation

B distillation

C evaporation

D filtration

QUIZ
15. Which of the following is a property of mixture?
A It has a definite composition.

B It consists of a single phase.

C It has a heterogeneous composition.

D It can be chemically separated into its components.

QUIZ
16. Which is NOT a technique used to separate components
of a mixture?
A condensation

B distillation

C evaporation

D filtration

QUIZ
17. Which of the following is a heterogeneous mixture?

A air

B oil in water

C stainless steel

D soft drink

QUIZ
18. What substance is made by mixing two elements without
being chemically combined?
A compound

B element

C mixture

D solution

QUIZ
19. What is the best way to use in separating iron parts from a
mixture?
A Filter paper

B Magnet

C Water

D Spoon

QUIZ
20. Which of the following uses evaporation as a means of
separating the components of a given mixture?
A iron fillings and sand

B pebbles and water

C sand and gravel

D sugar and water

QUIZ
21. Which of the following statements distinguishes pure substances
from mixtures?
A Can be separated by physical means

B Consists of two or more kinds of matter

C Have no specific solubility and densities

D Have constant boiling temperature and melting


temperature

QUIZ
22. Ethan wants to separate the marbles in a jar full of water. Which of the
following is the best way to separate the mixtures?
A decantation

B dissolving

C evaporation

D using a magnet

QUIZ
23. Which of the following will Jeffrey do to segregate the rubber bands of
different colors?
A water decantation

B evaporation

C filtration

D physical manipulation

QUIZ
24. Which of the following is NOT an example of element?

A Helium gas

B Hydrogen

C Ice

D Iron

QUIZ
25. Which of the following substance is NOT a compound?

A Carbon dioxide

B Hydrogen

C Salt

D Sugar

QUIZ
What is the importance of pure
substances and mixtures in our daily
life?
Explain your answer in 3-5 sentences.
THANK YOU!

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