RADIOACTIVITY

Question 1

precipitate

Answer 1

a liquid becoming a solid

Question 2

physical change

Answer 2

Any change that occurs without altering the chemical composition of a substance is a physical change

Question 3

chemical change

Answer 3

irreversible change where the atoms change and cause a solid substance

Question 4

corrodibility

Answer 4

HOW EASILY A SUBSTANCE CAN BE DESTROYED (corroded)

Question 5

synthesis reaction

Answer 5

when two chemicals combine to become a larger one

Question 6

decomposition reaction

Answer 6

when one chemical breaks up to form two or more smaller chemicals

Question 7

combustion reaction

Answer 7

when something organic reacts with oxygen to form carbon dioxide and water vapour

Question 8

double displacement reaction (precipitate)

Answer 8

if the cations of two ionic compounds switch places (the stronger element knocks another element out of the compounds)

Question 9

acid base reactions

Answer 9

when an acid is added to a base and water is produced