Free Printable SCIENCE 7 PT

1.

1. Which of the following is true about chemistry?

a)

A. It is the study of life.

b)

B. It is the study of matter.

c)

C. It is the study of fishes.

d)

D. It is the study of Earth and space.

2.

Which among the following is an example of matter?

a)

A. air

b)

B. electricity

c)

C. light

d)

D. sound

3.

Which among the following is not an example of matter?

a)

A. cloud

b)

B. light

c)

C. smoke

d)

D. water

4.

How will you complete this concept map? Choose the appropriate word to fill in the box

a)

A. compound

b)

B. element

c)

C. matter

d)

D. organic

5.

Which of the following are the major classifications of matter?

a)

A. element and compound

b)

B. homogeneous and heterogeneous

c)

C. pure substance and mixture

d)

D. organic and inorganic

6.

Which among the following mixture is a solution?

a)

A. oil and water

b)

B. salt and water

c)

C. sand and water

d)

D. mongo and water

7.

How will you classify element?

a)

A. organic and inorganic

b)

B. metal, nonmetal, metalloid

c)

C. pure substance and mixture

d)

D. homogeneous and Heterogeneous

8.

Which are the classifications of both organic and inorganic compounds?

a)

A. pure substance and mixture

b)

B. metal, nonmetal, metalloid

c)

C. acid, neutral and base

d)

D. suspension and colloid

9.

Which of the following is a homogeneous mixture?

a)

A. colloid

b)

B. solution

c)

C. substance

d)

D. suspension

10.

Grade-7-Sampaguita performed an experiment in order to answer the question “which would dissolved faster in hot water: salt or sugar”? What part of scientific method does it show?

a)

A. conclusion

b)

B. experiment

c)

C. problem

d)

D. result

11.

She reported the result of her simple investigation to her friends. Which step in scientific method is depicted?

a)

A. making conclusion

b)

B. verifying conclusion

c)

C. identifying the problem

d)

D. communicating the results

12.

Which shows the two components of solution?

a)

A. solute and solvent

b)

B. suspension and colloid

c)

C. metal and non-metal

d)

D. dispersed phase and dispersion medium

13.

If you prepare coffee, what is the solute?

a)

A. alcohol

b)

B. coffee powder

c)

C. salt

d)

D. water

14.

When you dissolved salt in water, what is the solvent?

a)

A. alcohol

b)

B. coffee powder

c)

C. salt

d)

D. water

15.

Which among the following is the most concentrated solution?

a)

A. Solution A

b)

B. Solution B

c)

C. Solution C

d)

D. Solution D

16.

Which among the following is consist of a substance that can no longer be separated into its component by chemical means or simply an element?

a)

A. ethanol (C, H, O)

b)

B. fats (C, H, O)

c)

C. sulfur (S)

d)

D. water (H, O)

17.

Which is an example of a compound?

a)

A. alcohol (C, H, O)

b)

B. nitrogen (N)

c)

C. potassium (K)

d)

D. sodium (Na)

18.

What elements are found in water or H2O?

a)

A. C and O

b)

B. H and O

c)

C. I and O

d)

D. K and O

19.

Which contains pure element?

a)

A

b)

B

c)

C

d)

D

20.

Which shows a mixture of two elements?

a)

A

b)

B

c)

C

d)

D

21.

Which among the following is a mixture of three types of compounds?

a)

A

b)

B

c)

C

d)

D

22.

Which illustrates a pure compound?

a)

A

b)

B

c)

C

d)

D

23.

Which among the following element is an important component of these jewelries in the picture?

a)

A. Carbon

b)

B. Hydrogen

c)

C. Oxygen

d)

D. Silver

24.

Which among the following elements is a metalloid?

a)

A. Gold (79)

b)

B. Neon (10)

c)

C. Oxygen (8)

d)

D. Silicon (14)

25.

Which among the following elements is a metal?

a)

A. Carbon (6)

b)

B. Copper (29)

c)

C. Helium (2)

d)

D. Hydrogen (1)

26.

How will you handle corrosive acidic and basic material properly?

a)

A. Touch it with your bare hands and determine its effect on the skin.

b)

B. Swallow and take it internally and wait for the reaction that will follow.

c)

C. Keep it within the reach of children and let them play with the chemical.

d)

D. Wear proper laboratory attire when dealing with corrosive acids and bases.

27.

How will you explain the picture as part of scientific method?

a)

A. Identifying the problem

b)

B. Formulating hypothesis

c)

C. Gathering data through research

d)

D. Testing hypothesis by experimentation

28.

Which among the following is a mixture?

a)

A. Oxygen

b)

B. Pizza

c)

C. Phosphorus

d)

D. Radium

29.

How will you describe element based on the picture?

a)

A. It is composed of only one type of atom.

b)

B. It is composed of different types of atom.

c)

C. It is composed of different types of matter.

d)

D. It is composed of only one type of compound.

30.

Which among the following is a compound?

a)

A. HCl

b)

B. I

c)

C. N

d)

D. P

31.

Which element has a chemical symbol of letter C?

a)

A. Calcium

b)

B. Carbon

c)

C. Chlorine

d)

D. Chromium

32.

Which among the following symbols of element is written correctly?

a)

A. aU

b)

B. Be

c)

C. h

d)

D. he

33.

How will you describe solution A?

a)

A. concentrated

b)

B. saturated

c)

C. supersaturated

d)

D. unsaturated

34.

How will you describe solution B?

a)

A. It has no solute.

b)

B. It has less solute.

c)

C. It has more solute.

d)

D. It has normal amount of solute.

35.

Which is supersaturated?

a)

A. Picture A

b)

B. Picture B

c)

C. Picture C

d)

D. Picture D

36.

What property of metal does this picture show?

a)

A. Ductility

b)

B. Elasticity

c)

C. Heavy

d)

D. Malleability

37.

Which picture shows that a metal is a good conductor?

a)

A

b)

B

c)

C

d)

D

38.

Which picture shows brittleness of a non-metal?

a)

A

b)

B

c)

C

d)

D

39.

Which does not belong to the group?

a)

A

b)

B

c)

C

d)

D

40.

How will you describe picture D?

a)

A. Non-metal is brittle.

b)

B. Non-metal is elastic.

c)

C. Non-metal is ductile.

d)

D. Non-metal is an insulator.

41.

How will you describe this picture?

a)

A. Metal is brittle.

b)

B. Metal is ductile.

c)

C. Metal is expensive.

d)

D. Metal is malleable.

42.

Look at the picture. What should you do when working in the laboratory?

a)

A

b)

B

c)

C

d)

D

43.

The picture shows a safety reminder that says “Keep out of reach of children.” What does this warning mean?

a)

A

b)

B

c)

C

d)

D

44.

What should you always remember about chemical bottles as shown in the picture?

a)

A

b)

B

c)

C

d)

D

45.

The picture shows a safety precaution when handling chemicals. What should you avoid doing?

a)

A

b)

B

c)

C

d)

D

46.

A solution is prepared by dissolving 25 g of sugar in 100 g of water. What is the total mass of the solution?

a)

A. 25 g

b)

B. 75 g

c)

C. 100 g

d)

D. 125 g

47.

What is the formula used to compute the percentage by mass of a solute?

a)

A $\frac{mass\ of\ solvent}{mass\ of\ solution}\times100$

b)

B $\frac{mass\ of\ solute}{mass\ of\ solution}\times100$

c)

C $\frac{mass\ of\ solution}{mass\ of\ solvent}\times100$

d)

D $\frac{mass\ of\ solution}{mass\ of\ solute}\times100$

48.

A solution is prepared by dissolving 25 g of sugar in 100 g of water. What is the percentage by mass of sugar in the solution?

a)

A. 10%

b)

B. 20%

c)

C. 25%

d)

D. 30%

49.

A dextrose solution has 184 g of water and 16 g of dextrose. What is the total mass of the solution?

a)

A. 184 g

b)

B. 200 g

c)

C. 16 g

d)

D. 210 g

50.

A dextrose solution has 184 g of water and 16 g of dextrose. What is the percentage by mass concentration of SOLUTE of dextrose in the solution?

a)

A. 6%

b)

B. 8%

c)

C. 10%

d)

D. 12%

SCIENCE 7 PT - QUARTER 1

Total questions: 50

Worksheet time: 25mins

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