Grade 1, 2, & 3 Chemistry: Free Trial*

G. 8 & 9

Chemistry

F. 1, 2, & 3

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G. 8 & 9 / F. 1, 2, & 3

Chemistry: Free Trial*

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1 / 10

1. What colour is a universal indicator in strong acid?

A. Red

B. Orange

C. Green

D. Purple

2 / 10

2. The formula for calcium hydroxide is $Ca(OH)_{2}$. This means it contains:

A. 1 calcium atom, 2 oxygen atoms, and 1 hydrogen atom

B. 1 calcium atom, 1 oxygen atom, and 2 hydrogen atoms

C. 2 calcium atoms, 2 oxygen atoms, and 2 hydrogen atoms

D. 1 calcium atom, 2 oxygen atoms, and 2 hydrogen atoms

3 / 10

3. Which of these statements about solids is true?

A. They can be compressed easily

B. They have no definite volume

C. They do not flow

D. They take the shape of their container

4 / 10

4. If you reduce the volume of a gas...

A. The temperature falls

B. It gets bigger

C. It expands

D. The pressure increases

5 / 10

5. When a smell spreads, particles move away from where they originated. This is called...

A. Condensation

B. Diffusion

C. Evaporation

D. Dispersion

6 / 10

6. The state of matter, which has very low density is ...

A. Solid

B. Liquid

C. Gas

D. Solution

7 / 10

7. The best description of a mixture is ...

A. A lot of substances jumbled together

B. One substance on its own

C. Two or more substances added together which can be easily separated

D. Two or more substances chemically joined together

8 / 10

8. The number of different elements in calcium carbonate ($CaCO_{3}$) are...

A. 3

B. 5

C. 2

D. 4

9 / 10

9. Which of the following is the name for group 7 in the periodic table?

A. Noble gases

B. Halogens

C. Alkaline earth metals

D. Alkali metals

10 / 10

10. Which of the following is the name for group 2 in the periodic table?

A. Alkali metals

B. Halogens

C. Noble gases

D. Alkaline earth metals

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