Reactions Of Non-metals With Oxygen Flashcards Preview

Abi Science 2016 > Reactions Of Non-metals With Oxygen > Flashcards

Flashcards in Reactions Of Non-metals With Oxygen Deck (19):
1

What colour does litmus paper change in an acidic solution?

Red

2

What colour does litmus paper turn in an alkaline solution?

Blue

3

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

Acidic

4

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

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

5

What is an aqueous solution?

When the chemical is dissolved in water

6

What is an allotrope?

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

7

What is an example of an allotrope?

Carbon: Coal and Diamond

8

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

1-6.9
Acid

9

What happens when a metal oxide reacts with hydrochloric acid?

Metal oxide+acid➡️Salt+water

10

How does Carbon burn in Oxygen?

With an orange- yellow flame

11

What gas is formed when carbon reacts with oxygen?

Carbon dioxide

12

What is the pH of carbon dioxide?

Acid

13

How does sulfur react with oxygen?

With a purple bluish flame
Forms a choking, poisonous gas

14

What is the pH of sulfur dioxide?

Acid

15

What is the reaction of white phosphorous and oxygen like?

Yellow-orange flame
White fumes are formed

16

How must white phosphorous be stored?

In water

17

Why must white phosphorous be stored under special conditions?

It will combust in the air

18

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

Phosphorous pentoxide

19

Why are non-metal oxides classified as acids?

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