Chemistry

Question 1

How do you calculate the number of neutrons?

Answer 1

atomic number-mass number

Question 2

What does the mass number tell you?

Answer 2

The total number of protons and neutrons

Question 3

What is a compound?

Answer 3

2 or more atoms joined together

Question 4

Reactivity_____ down the row.

Answer 4

increases

Question 5

Reactivity_____ up the row.

Answer 5

decreases

Question 6

What is ionic bonding?

Answer 6

It is between a metal and a non-metal.

Question 7

What is covalent bonding?

Answer 7

Between 2 non-metals.

Question 8

What are elements?

Answer 8

Atoms with the same atomic number

Question 9

What are compounds?

Answer 9

When elements react and combine with other atoms to form compounds.

Question 10

How do ionic bonds form?

Answer 10

positive and negative ions attract and create an ionic bond.

Question 11

Name 3 covalent substances.

Answer 11

• silica
• diamond
• graphite

Question 12

What is an alloy?

Answer 12

A metal combined with other elements.

Question 13

What is an anion?

Answer 13

Negative ion

Question 14

What is a cation?

Answer 14

Positive ion

Question 15

What is electrolysis?

Answer 15

Splitting a substance using electricity

Question 16

What is a cathode?

Answer 16

Negative electrode

Question 17

What is an anode?

Answer 17

Positive electrode

Question 18

What is an electrolyte

Answer 18

The substance being broken down

Question 19

What is the test for hydrogen?

Answer 19

Makes a popping sound when lit

Question 20

What is the test for oxygen?

Answer 20

Re lights a glowing splint

Question 21

What is meant by an ionic compound?

Answer 21

Contains positive and negative ions they are overall neutral