Chemistry C1

Question 1

element

Answer 1

A pure substance made of one type of atom

Question 2

compound

Answer 2

made of two or more different elements chemically bonded

Question 3

mixture

Answer 3

made from two different elements being mixed without being chemically bonded

Question 4

what is the mass of a proton

Answer 4

1

Question 5

what is the mass of a neutron

Answer 5

1

Question 6

what is the mass of a electron

Answer 6

Neglible

Question 7

what did Mandeleev not figure out

Answer 7

the last group

Question 8

what is the charge of an electron

Answer 8

-1

Question 9

what is the charge of a neutron

Answer 9

0

Question 10

what is the charge of a proton

Answer 10

+1

Question 11

What is a molecule

Answer 11

Two or more atoms chemically bonded together

Question 12

Name all three types of separation technique

Answer 12

Filtration, distillation, crystallisation

Question 13

Explain how filtration works

Answer 13

:sand + water into funnel + filtration paper= normal water

Question 14

Name all the parts of an atom

Answer 14

Nucleus, protons, neutrons ,electrons, electron shell

Question 15

Explain how crystallisation works

Answer 15

Salt + water into bowl that is boiling, water evaporates salt is crystal

Question 16

Say how crystallisation works

Answer 16

Salt + water into bowl that is boiling, water evaporates salt is crystal

Question 17

Isotope

Answer 17

Same element with the same amount of protons different amount of neutrons

Question 18

Explain how distillation works

Answer 18

Separates two liquid from two boiling point using a water jacket to condense one of the liquids