DEFINTIONS

Question 1

Define catalyst

Answer 1

A catalyst is a substance that speeds up the reaction but isn’t used up in the process. They are still chemically unchanged at the end of the process.

Question 2

define element

Answer 2

A pure substance made up of only 1 type of atom

Question 3

Define compound

Answer 3

A substance made up of the atoms of 2 or more elements which have been chemically bonded together

Question 4

Define mixture

Answer 4

A substance made up of the atoms of 2 or more elements or compounds which have not been chemically bonded together

Question 5

Define isotope

Answer 5

Different atoms of the same element with the same number of protons but different number of neutrons. Isotopes have the same chemical properties as they have the same number of electrons.

Question 6

What non-metal can conduct electricity?

Answer 6

Graphite

Question 7

What non-metal is a good conductor of heat?

Answer 7

Diamond

Question 8

define ion

Answer 8

a charged particle

Question 9

metals lose electrons to form positively charged ions called:

Answer 9

cations