chem

Question 1

Isotopes

Answer 1

Isotopes are members of a family of an element that all have the same number of protons but different numbers of neutrons. The number of protons in a nucleus determines the element’s atomic number on the Periodic Table.

Question 2

Silver nitrate test
white
cream
yellow

Answer 2

Chloride
Bromide
Iodide

Question 3

Flame test
lithium

Answer 3

Red

Question 4

Flame test
sodium

Answer 4

yellow orange

Question 5

Flame test
Potassium

Answer 5

Lilac

Question 6

Flame test
Calcium

Answer 6

brick red

Question 7

Flame test
Barium

Answer 7

apple green

Question 8

Flame test
Strontium

Answer 8

Red

Question 9

Copper

Answer 9

Green blue

Question 10

Atom

Answer 10

An atom is a particle that consists of a nucleus of protons and generally neutrons

Question 11

Molecule

Answer 11

a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.

Question 12

Compound

Answer 12

Two or more element chemically bonded

Question 13

Mixture

Answer 13

Two or more elements not chemically bonded

Question 14

element

Answer 14

Made up of one type of atom

Question 15

Group 1

Answer 15

Alkali metals

Question 16

Why is group 1 very reactive

Answer 16

Only loose 1 electron

Question 17

Group 0

Answer 17

Noble gasses

Question 18

Why is group zero not reactive

Answer 18

Full outer shell

Question 19

More reactive down or up group 1

Answer 19

Down - less shielding and attraction