Substances Topic Test

Substances Topic Test

Instructions:

Answer all questions on the answer sheet provided.

Part A: Multiple choice

Select the letter that is the best answer for the question. Circle this on your answer sheet. each question is worth 1 mark.

Part B: True/false

Circle either T (true) or F (false) on your answer sheet. Each question is worth 1 mark.

Part C: Short answer

Write your answers in the spaces provided. Marks are allocated on the answer sheet.

PART A MULTIPLE CHOICE

1. Which one of the following substances is an element?

A. water

B. zinc

C. soap

D. hydrochloric acid

2. Chose the odd one out.

A. oxygen

B. neon

C. hydrogen

D. gold

3. Which one of the following is a liquid at room temperature?

A. mercury

B. silver

C. carbon

D. magnesium

4. Which of the following is a metalloid?

A. sodium

B. lead

C. silicon

D. helium

5. Choose the correct answer.

A protons are uncharged and are in the nucleus of the atom

B neutrons are negative orbit the nucleus of the atom

C electrons are negative and orbit the nucleus of an atom

D protons are positive and are the same size as electrons

6. Which is the correct symbol for potassium?

A K

B P

C Po

D Pt

7. The non-metals are found in which part of the periodic table?

A on the left

B in the middle

C on the right

D the last rows

8. A chlorine atom has 17 protons, 17 electrons and 18 neutrons. Its atomic number is:

A 17

B 18

C 34

D 35

9. A compound is a substance that is:

A made up of different atoms that are mixes together

B made up of different elements whose atoms are bonded together

C has similar characteristics to the elements that it is made from

D a type of mixture containing only a few different types of atoms

10. Table salt is a common example of a/an:

A element

B mixture

C compound

D atom

PART B TRUE OR FALSE

11. Non-metals are good conductors of electricity.

12. All metals are solids at room temperature.

13. Oxygen is a colourless gas.

14. All metals will react with hydrochloric acid.

15. Stainless steel is an alloy.

PART C SHORT ANSWER

16. Draw a diagram of an atom. Label the protons, electrons, neutrons and the nucleus. (2)

17. What do we call the rows and the columns of the periodic table? (2)

18. Metals are said to be malleable and ductile. What do these terms mean? (2)

19. Using a labelled diagram describe how you could test whether a substance conducts electricity. (3)

20. State three observations that indicate that a chemical change has occurred. (3)

21. Copy and complete the following word equations: (3)

a sodium + chlorine

b magnesium + oxygen

c iron + copper sulfate

22. What is corrosion? (1)

23. Explain why people have developed alloys instead of using pure metals? (2)

24. What is a synthetic substance? Give an example. (2)

25. Give the symbols for the following elements. (5)

a hydrogen

b sodium

c barium

d silver

e silicon

Name .....................................................

SUBSTANCES ANSWER SHEET

PART A MULTIPLE CHOICE(1 Mark each)

1. A B C D 6. A B C D

2. A B C D 7. A B C D

3. A B C D 8. A B C D

4. A B C D 9. A B C D

5. A B C D 10. A B C D

PART B TRUE/FALSE (1 Mark each)

11. T F 14. T F

12. T F 15. T F

13. T F

16.

2 MARKS

17.

...............................................................................................................................................................................

2 MARKS

18.

...............................................................................................................................................................................

2 MARKS

19.

3 MARKS

20.

...............................................................................................................................................................................

3 MARKS

21.

3 MARKS

22.

...............................................................................................................................................................................

1 MARK

23.

...............................................................................................................................................................................

2 MARKS

24.

...............................................................................................................................................................................

2 MARKS

25. a .....................................................

b .....................................................

c .....................................................

d .....................................................

e .....................................................

5 MARKS

TOTAL = /40