Metals and Their Uses

Question 1

catalyst

Answer 1

a substance that changes the speed of a reaction without being permanently changed itself

Question 2

corrosion

Answer 2

refers to any reaction with oxygen at the surface of a metal

Question 3

rust is a common compound that can be described as..

Answer 3

iron hydroxide

Question 4

iron hydroxide word equation

Answer 4

iron + oxygen + water —> iron hydroxide

Question 5

when metals react with water they form..

Answer 5

hydrogen gas and metal hydroxide

Question 6

word equation for when metals react with water

Answer 6

metal + water —> metal hydroxide + hydrogen

Question 7

word equation for when metal reacts with oxygen

Answer 7

metal + oxygen —> metal oxide

Question 8

word equation for when metal reacts with an acid

Answer 8

metal + acid —> metal salt + hydrogen

Question 9

what salt does sulfric acid produce

Answer 9

sulphate salt

Question 10

what salt does nitric acid produce

Answer 10

nitrate salt

Question 11

what salt does hydrochloric acid produce

Answer 11

chloride salts

Question 12

dependant variable

Answer 12

the variable that depends on something else

Question 13

when a gas changed into a liquid it is called..

Answer 13

condensing