acids and bases

Question 1

what is a pH scale used for?

Answer 1

it is used to determine if a substance is acidic neutral or alkaline

Question 2

what is the substance if it has a pH of less than 7?

Answer 2

acidic

Question 3

if the pH is equal to 7 it is ….

Answer 3

nuetral

Question 4

if the pH is greater than 7 it is…

Answer 4

alkaline

Question 5

how can the pH kf a substance be determined?

Answer 5

universal indicator pH paper or a pH meter

Question 6

what happens when a substance burns in the air and reacts with oxygen?

Answer 6

it forms an oxide

Question 7

what happens when sulfur is burned?

Answer 7

it produces sulfur gas

Question 8

does sulfur dioxide dissolve in water?

Answer 8

yes

Question 9

wha happens when sulfur dioxide dissolves in water?

Answer 9

it becomes sulfuric acid

Question 10

what happens when carbon dioxide is bubbled through universal imdicator?

Answer 10

it turns acidic

Question 11

what happens when carbon burns in air?

Answer 11

it produce carbon dioxide

Question 12

when will nitrogen and oxygen react with each other?

Answer 12

they will only text with eacbtiehr when they are supplied with a lot of energy

Question 13

Give two every day examples of when oxygen and nitrogen react?

Answer 13

in lightning storms and in car engines when there is a high energy spark

Question 14

what gas is produced when nitrogen and oxygen rest?

Answer 14

nitrogen dioxide

Question 15

dkes nitrogen dioxide dissolves?

Answer 15

yea

Question 16

what are three common types of laboratory acids?

Answer 16

nitric acid sulfuric acid and hydrochloric acid

Question 17

what are nitric acid and sulfur ice acids made from?

Answer 17

non metal oxides

Question 18

when is hydrochloric acid made?

Answer 18

it is made when hydro chloride gas is bubbles through water

Question 19

what are the main cause of acid rain?

Answer 19

sulfur dioxide nitrogen dioxide and carbon dioxide

Question 20

how is sulfur dioxide produced?

Answer 20

fossil fuels burning in fsctroes that contain sulfur

Question 21

how is carbon dioxide produced?

Answer 21

burning fossil fuels

Question 22

what is carbon dioxide used as?

Answer 22

hearing,energy electricity and transport

Question 23

what is the main environmental problem with co2 ?

Answer 23

climate change the melting of ice cal’s leading to more floods

Question 24

what is a alternative of the production of carbon dioxide?

Answer 24

wind power and solar energy

Question 25

how can suffer dioxide be reduced?

Answer 25

they can be removed from fossil fuels before they get burned and chemical scrubbers

Question 26

how is nitrogen dioxide produced ?

Answer 26

it is produced when nitrogen and oxygen in the air react with each other

Question 27

what are examples of this reaction ?

Answer 27

lightning and car engines

Question 28

how can we reduce nitrogen dioxide emissions?in care

Answer 28

use a catalytic converter which changes nitegoen dioxide back to nitrogen and oxygen

Question 29

what are carbon dioxide sulfur dioxide and nitrogen dioxide?

Answer 29

soluble in water

Question 30

what produces an alkaline solution?

Answer 30

soluble metal oxides and hydroxides

Question 31

what do insoluble metal oxides do?

Answer 31

they have no effect on the pH of water

Question 32

do soluble metals oxides for alkali’s?

Answer 32

yes