KSSM Chemistry Chapter 4

Question 1

[4.4] When going down Group 1, reactivity of elements decreases.

Accepted Answer

False

Question 2

[4.6] State the gases in Period 3

Accepted Answer

Chlorine, Argon

Question 3

[4.7] Transition elements are used in the industry. What is Iron, Fe used for?

Accepted Answer

is used in the Haber Process to produce ammonia, NH3

Question 4

[4.2] The proton number for Silicon is 14. What group is it in?

Accepted Answer

14

Question 5

[4.3] Pick the elements that are in Group 18

Accepted Answer

Radon, Argon

Question 6

[4.5] When going down Group 1, reactivity of elements decreases.

Accepted Answer

True

Question 7

[4.2] The electron arrangement for Aluminium is 2.8.3 . What group is it in?

Accepted Answer

13

Question 8

[4.7] The properties of transition elements include:

Accepted Answer

Have high densities, Solids with shiny surfaces

Question 9

[4.1] Who classified the elements into four groups based on the chemical properties.

Accepted Answer

Antoine Lavoisier

Question 10

[4.LOL] Chemistry has 57 students, Physics has 14 students. Calculate how many vowels are there in the sentence before.

Accepted Answer

9

Question 11

[4.1] Who proposed the Law of Octaves?

Accepted Answer

John Newlands

Question 12

[4.4] When alkali metals react with water, alkaline hydroxide solution, hydrogen gas is formed. What is the correct eq-

Accepted Answer

2Li(s) + 2H2O(l) -> 2LiOH(aq) + H2(g)

Question 13

[4.3] "_____ is used in flashlights or cameras"

Accepted Answer

Argon

Question 14

[4.3] Noble gases can also be called inert gases.

Accepted Answer

True

Question 15

[4.7] What is used to make stained glass windows.

Accepted Answer

Manganese

Questions 15