metals & acids

Question 1

what is the name of the elements in group 1?

Answer 1

alkali metals

Question 2

what is the name of the elements in group 7?

Answer 2

halogens

Question 3

what is the name of the elements in group 0?

Answer 3

noble gases

Question 4

what is the most reactive element?

Answer 4

potassium

Question 5

metal+oxygen=

Answer 5

metal oxide

Question 6

metal+water=

Answer 6

metal hydroxide+hydrogen

Question 7

metal+acid

Answer 7

Metal + acid → salt + hydrogen

Question 8

what is displacement reaction?

Answer 8

when the less reactive metal gets replaced with the most reactive metal

Question 9

what is the hydrogen gas test?

Answer 9

lint splint test

Question 10

what is an ore?

Answer 10

minerals extracted from rocks

Question 11

how do you know a metal is more reactive than another metal?

Answer 11

more bubbles
more fizzing

Question 12

what is a ceramic?

Answer 12

pottery, made out of clay soil.

Question 13

what are the properties of ceramics?

Answer 13

hard
brittle
strong
difficult to bend
electrical insulator
high melting point

Question 14

what is a polymer?

Answer 14

a chain of monomers

Question 15

what is a composite material?

Answer 15

a material made with 2 other materials