Grade 9 Final Revision

Question 1

What is the main characteristic of Group 1 elements in the periodic table?

Accepted Answer

2

Question 2

Which element in Group 1 is the most reactive?

Accepted Answer

3

Question 3

How many valence electrons do Group 1 elements have?

Accepted Answer

0

Question 4

What is the electronic structure of sodium (Na)?

Accepted Answer

0

Question 5

What characteristic is common among Group 7 elements?

Accepted Answer

2

Question 6

Which element is a halogen?

Accepted Answer

2

Question 7

How many valence electrons do Group 7 elements have?

Accepted Answer

2

Question 8

What happens when a Group 1 metal reacts with a Group 7 element?

Accepted Answer

0

Question 9

Which of the following is a property of alkali metals?

Accepted Answer

2

Question 10

What is the electronic structure of chlorine (Cl)?

Accepted Answer

2

Question 11

What is the rate of a chemical reaction?

Accepted Answer

0

Question 12

Which factor does NOT affect the rate of a chemical reaction?

Accepted Answer

3

Question 13

How does increasing the temperature affect the rate of reaction?

Accepted Answer

1

Question 14

What role does a catalyst play in a chemical reaction?

Accepted Answer

3

Question 15

Which of the following increases the rate of reaction by increasing the surface area?

Accepted Answer

0

Question 16

Why does increasing the concentration of reactants increase the rate of reaction?

Accepted Answer

1

Question 17

How does pressure affect the rate of reaction in gases?

Accepted Answer

1

Question 18

What is the effect of a catalyst on the activation energy of a reaction?

Accepted Answer

1

Question 19

Which factor can slow down the rate of a chemical reaction?

Accepted Answer

2

Question 20

What is an example of a real-life catalyst?

Accepted Answer

2