Reactions Of Non-metals With Oxygen

Question 1

What colour does litmus paper change in an acidic solution?

Answer 1

Red

Question 2

What colour does litmus paper turn in an alkaline solution?

Answer 2

Blue

Question 3

What pH are oxides that are made with non-metals?

Answer 3

Acidic

Question 4

What are the symbols for the phase of reactants and products in chemical equations?

Answer 4

(s) -solid
(l) - liquid
(g) - gas
(aq) - aqueous solution

Question 5

What is an aqueous solution?

Answer 5

When the chemical is dissolved in water

Question 6

What is an allotrope?

Answer 6

When an element can be found as a solid in different forms.

Question 7

What is an example of an allotrope?

Answer 7

Carbon: Coal and Diamond

Question 8

What is the usual pH of a non-metal oxide?

Answer 8

1-6.9

Acid

Question 9

What happens when a metal oxide reacts with hydrochloric acid?

Answer 9

Metal oxide+acid➡️Salt+water

Question 10

How does Carbon burn in Oxygen?

Answer 10

With an orange- yellow flame

Question 11

What gas is formed when carbon reacts with oxygen?

Answer 11

Carbon dioxide

Question 12

What is the pH of carbon dioxide?

Answer 12

Acid

Question 13

How does sulfur react with oxygen?

Answer 13

With a purple bluish flame

Forms a choking, poisonous gas

Question 14

What is the pH of sulfur dioxide?

Answer 14

Acid

Question 15

What is the reaction of white phosphorous and oxygen like?

Answer 15

Yellow-orange flame

White fumes are formed

Question 16

How must white phosphorous be stored?

Answer 16

In water

Question 17

Why must white phosphorous be stored under special conditions?

Answer 17

It will combust in the air

Question 18

What gas is released from the reaction between phosphorous and oxygen?

Answer 18

Phosphorous pentoxide

Question 19

Why are non-metal oxides classified as acids?

Answer 19

When made into an aqueous solution (mixed with water) their pH is below 7