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Grade 7-Summative-IMG

Total questions: 35

Worksheet time: 19mins

Name
Class
Date
1.

It is the application of science.

a)

technology

b)

social studies

c)

medicine

d)

filipino

2.

3. Andrei placed one solution under fire while the other on ice. Which part of the Scientific method is being described?

a)

Testing the hypothesis

b)

observation

c)

conclusion

d)

making hypothesis

3.

What is the basis of an educational guess or hypothesis?

a)

own opinion

b)

hearsay

c)

observations 

d)

nothing 

4.

What do you call the quantity, factor, or condition that can be controlled or changed in the experiment?

a)

conclusion

b)

application

c)

quantity

d)

variable

5.

Complete the sentence: Matter is anything that has _____ and _____.

a)

atom and density

b)

mass and voulume

c)

substance and mixtures

d)

element and compound

6.

The Periodic Table of Elements is arranged in what manner?

a)

alphabetical order

b)

increasing atomic number

c)

decreasing atomic number

d)

random arrangement

7.

Which of the following is TRUE about pure substance?

a)

heterogeneous

b)

does not melt completey

c)

properties are the same all throughout

d)

has varying composition

8.

It is a systematized body of knowledge based on facts observation and experimentation.

a)

MATHEMATICS

b)

SOCIAL SCIENCES

c)

SCIENCE

d)

ENGINEERING

9.

It is a simple statement that presents the possible solution to the problem.

a)

hypothesis

b)

theory

c)

conclusion

d)

prediction

10.

It is a systematic process of investigation.

a)

scientific method

b)

problem solving

c)

formulation of hypothesis

d)

reporting of findings

11.

What does the picture show?

a)

identifying the problem

b)

drawing conclusion

c)

testing the hypothesis

d)

reporting of findings

12.
Substances that CANNOT be broken down chemically into other substances are (pure physical and chemical down to the atom)
a)
elements
b)
compounds
c)
mixtures
d)
solutions
13.
All elements are composed of extremely small particles called
a)
compounds
b)
mixtures
c)
atoms
d)
molecules
14.
The elements in a column (vertical group or family) of the periodic table
a)

have similar properties.
b)

are in the same period.
c)

have the same atomic mass.
d)

have very similar chemical symbols.
15.

What is a solvent

a)

A liquid that will dissolve a solid solute

b)

Another word for solution

c)

A thing that make drinks change colour

d)

Usually the solid about to be dissolved

16.
If I dissolve sugar in water, what is the solute?
a)
Water
b)
Hydrogen
c)
Sugar
d)
Carbon
17.
When a solvent contains as much of the solute as it can hold, the solution is said to be
a)
supersaturated
b)
diluted
c)
saturated
d)
unsaturated
18.
__________ are made up of solutes and solvents.
a)
Solutions
b)
Suspensions
c)
Heterogeneous Mixtures
d)
Pure Substances
19.

Which would NOT increase the rate at which a sugar cube dissolves?

a)

Reducing the amount of solvent

b)

Crushing the sugar cube

c)

Stirring the solution

d)

Heating the solvent

20.

You can make a solute dissolve more quickly in a solvent by

a)

adding more solute.

b)

adding ice.

c)

heating the solvent.

d)

removing some solvent.

21.

The amount of solute that can be dissolved in a specific amount of solvent at a given temperature is its

a)

concentration.

b)

density.

c)

dilution.

d)

solubility.

22.

Which of the following is a solution?

a)

sand

b)

concrete

c)

coffee

d)

chocolate cookie

23.
Which of the following would dissolve the slowest?
a)
a sugar cube in hot water
b)
a sugar cube in cool water
c)
powdered sugar in cool water
d)
powdered sugar in hot water
24.
When no more sugar will dissolve in a glass of water, the solution is...
a)
unsaturated
b)
saturated
c)
supersaturated
25.
Which salt is LEAST soluble at 0 ºC?
a)
K2Cr2O7
b)
KNO3
c)
 KClO3
d)
Ce2(SO4)3
26.

To make a solute dissolve more quickly in a solvent which would you do?

a)

Put it in cold water and stir it

b)

Put it in warm water and stir it

27.

Define the term soluble.

a)

Can dissolve in water

b)

Cannot dissolve in water

c)

Partially dissolves in water

28.

Which of the following refers to the solution that contains less amount of solute than can dissolve at a given temperature?

a)

A. Solubility

b)

B. Unsaturated solution

c)

C. Saturated solution

d)

D Supersaturated solution

29.

Define the term insoluble.

a)

Can dissolve in water.

b)

Cannot dissolve in water.

c)

Partially dissolves in water.

30.

What is the percent by mass of a solution made by dissolving 20.0 g of NaCl into 180.0 g of water?

a)

10.0 %

b)

11.1 %

c)

80.0 %

d)

20.0 %

31.

What mass of water should be added to 22.0 g of KCl to make 5.50% by mass solution?

a)

400 g

b)

40 g

c)

0.25 g

d)

25 g

32.
True or False? The higher the concentration of a solution the less solutes it has in it.
a)
True
b)
False
33.
Which one of the following would you use to separate sand from iron filings?
a)
a bar magnet
b)
filter paper
c)
chromatography paper
d)
alum
34.
a)
element
b)
compound
c)
mixture of elements
d)
mixture of compounds
35.
a)
element
b)
compound
c)
mixture of elements
d)
mixture of compounds