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SUMMATIVE TEST GRADE 7 1Q.

Total questions: 25

Worksheet time: 13mins

Name
Class
Date
1.

1. What is the third step of scientific method/investigation?

a)

Identify the problem

b)

Create a hypothesis

c)

Testing of Hypothesis

d)

Drawing conclusion

2.

It is the motion due to the collision of rapidly moving particles or the erratic movement of colloid particles.

a)

Conduction

b)

Suspension

c)

Brownian movement

d)

Convection

3.

Which type of substance is sodium chloride (NaCl)?

a)

Acid

b)

Base

c)

Salt

d)

Sugar

4.

Which Sulfur and iron filings are put together? The components can be separated through which process?

a)

Decantation

b)

Filtration

c)

Magnetic separation

d)

Evaporation

5.

It is the maximum amount of a substance that will dissolve in a given amount of solvent at a specified temperature?

a)

Solute

b)

Solubility

c)

Soluble

d)

Solvent

6.

This refers to as the ability of a liquid solute to dissolve in a liquid solvent?

a)

Solubility

b)

Immiscible

c)

Homogeneous Mixture

d)

Miscible

7.

One of the properties of colloids that involves adhesion of any such species onto the surface of the particles.

a)

Absorption

b)

Adsorption

c)

Collision

d)

Suspension

8.

Considered as the systematic body of knowledge that deals with natural world and propose explanations that can be tested by examining evidences?

a)

Chemistry

b)

Physics

c)

Science

d)

Scientific experiments

9.

A type of data gathering that obtained by counting or measuring?

a)

Quantitative Data

b)

Qualitative Data

c)

Quantity Data

d)

Quality Data

10.

This must be stated in a way that makes it testable, possible answer to the question and must be thoroughly tested.

a)

Data analysis

b)

Drawing of Conclusion

c)

Hypothesis

d)

Statement of the problem

11.

Two or more substances that are not chemically combined with each other and can be separated by physical means is ____?

a)

Compound

b)

Elements

c)

Mixture

d)

Solution

12.

A homogeneous mixture of two or more substances is ____?

a)

Suspension

b)

Solvent

c)

Solute

d)

Solution

13.

These are the liquids that can be mixed into each other.

a)

Solubility

b)

Insolubility

c)

Miscibility

d)

Immiscibility

14.

The visible path produced by a beam of light passing through a colloidal mixture is __.

a)

Brownian movement

b)

Adsorption

c)

Absorption

d)

Tyndall effect

15.

A solution that has one relatively large amount of dissolves solute?

a)

Dilute solution

b)

Concentrated solution

c)

Homogeneous solution

d)

Heterogeneous solution

16.

A solution that has one relatively small amount of dissolves solute?

a)

Dilute solution

b)

Concentrated solution

c)

Homogeneous solution

d)

Heterogeneous solution

17.

A solution that dissolves more solute particles is what we called ____ solution.

a)

Dilute solution

b)

Saturated solution

c)

Unsaturated solution

d)

Supersaturated solution

18.

A solution that dissolves no more solute is what we called _____ solution.

a)

Dilute solution

b)

Saturated solution

c)

Unsaturated solution

d)

Supersaturated solution

19.

A solution that dissolves no more solute is what we called _____ solution.

a)

Dilute solution

b)

Saturated solution

c)

Unsaturated solution

d)

Super saturated solution

20.

These are arranged from left to right and top to bottom in order of increasing atomic number. Order generally coincides with increasing atomic mass.

a)

Atoms

b)

Elements

c)

Group

d)

Periods

21.

Substances that are made up of more than one type of atom is ___.

a)

Elements

b)

Compounds

c)

Molecules

d)

Atom

22.

The process of separating components of a mixture based on different boiling points is ___.

a)

Decantation

b)

Evaporation

c)

Sublimation

d)

Distillation

23.

A kind of separating mixture that distributes the substances between a stationary phase and mobile phase, the colors separated from the sample by placing one end of the paper in a solvent.

a)

Decantation

b)

Sublimation

c)

Paper chromatography

d)

Distillation

24.

The process of separating the particles of colloids from those of crystalloids by means of diffusion through suitable membrane. It is carried out by the kidney which removes the crystalloids, urea, uric acid, hippuric acid and ammonia Compounds out of the kidney.

a)

Purification

b)

Decantation

c)

Dialysis

d)

Kidney transplant

25.

A heterogeneous mixture in which solute-like particles settle out of a solvent-like phase sometime after their introduction to the solution is __.

a)

Suspension

b)

Solvent

c)

Solvent

d)

Solution