Science

Question 1

Acid +metal -> _____________

Answer 1

Salt + hydrogen

Question 2

Acid + Carbonates -> __________

Answer 2

Salt + H2O + CO2

Question 3

Nitric acid ->

Answer 3

Nitrate

Question 4

Sulfuric acid

Answer 4

Sulfate

Question 5

Phosphoric acid

Answer 5

Phosphate

Question 6

Sulfuric acid + barium carbonate ->

Answer 6

Barium sulfate + H2O + CO2

Question 7

Nitric acid + sodium carbonate ->

Answer 7

Sodium nitrate + H2O + CO2

Question 8

Sulfuric acid + sodium ->

Answer 8

Sodium sulfate +hydrogen

Question 9

Carbonic acid + magnesium ->

Answer 9

Magnesium carbonate + hydrogen

Question 10

Nitric acid+ potassium ->

Answer 10

Potassium nitrate + hydrogen

Question 11

Sulfuric acid + magnesium hydroxide ->

Answer 11

Magnesium sulfate + H2O

Question 12

Carbonic acid + calcium hydroxide ->

Answer 12

Calcium carbonate + H2O

Question 13

Carbonic acid ->

Answer 13

Carbonate

Question 14

Hydrochloric acid ->

Answer 14

Chloride

Question 15

Hydrochloric acid + sodium hydroxide ->

Answer 15

Sodium chloride + H2O

Question 15

Hydrochloric acid + calcium carbonate ->

Answer 15

Calcium chloride + H2O + CO2

Question 15

Acid + base-> ________

Answer 15

Salt + H2O

Question 16

Atom

Answer 16

Small particles that make up everything

Question 17

Atoms have:

Answer 17

• Protons
• Neutrons
• Electrons

Question 18

The nucleus includes:

Answer 18

Protons and neutrons

Question 19

The electron is _______ the size of the nucleus

Answer 19

1/1800

Question 20

Element:

Answer 20

Made up of only one type of atom

Question 21

Compound:

Answer 21

Made up of two or more different atoms chemically joined

Question 22

Molecule:

Answer 22

A group of atoms bonded together

Question 23

Electrons:

Answer 23

Negatively charged particles

Question 24

Neutrons:

Answer 24

Neutral particles

Question 25

Protons:

Answer 25

Positively charged particles

Question 26

No. of neutrons =

Answer 26

Mass no. - atomic no.

Question 27

Valency shell

Answer 27

Outer most shell

Question 28

Valency electrons

Answer 28

Electrons in valency shell

Question 29

Periodic table

Answer 29

Tells us about the properties of elements

Question 30

Columns in the periodic table:

Answer 30

Groups

Question 31

Groups in the periodic table:

Answer 31

Determines how many electrons in the outer shell (valency shell)

Question 32

Rows in the periodic table:

Answer 32

Periods

Question 33

Periods in the periodic table:

Answer 33

Determines how many electron shells there are in an element

Question 34

History of the atom

Answer 34

Dalton, Thomas, Rutherford, Bohr

Question 35

Combustion reaction

Answer 35

Metal + oxygen -> metal oxide

Normal reactions -> Get full outer shell

Question 36

Acid

Answer 36

Less than 7

Question 37

Base

Answer 37

More than 7

Question 38

Neutral

Answer 38

7

Question 39

Neutralisation

Answer 39

Acid + base

Acid + carbonate

Question 40

Hydrogen gas test

Answer 40

Pop test

Question 41

Carbon dioxide gas test

Answer 41

Milky limewater

Question 42

Oxygen gas test

Answer 42

Glowing splint

Question 43

Reactions

Answer 43

Exothermic and endothermic

Question 44

Exothermic

Answer 44

Releases energy

Hotter

Question 45

Endothermic

Answer 45

Absorbed energy

Cooler

Question 46

Unstable nucleus

Answer 46

-> decay

Question 47

Radiation released

Answer 47

Alpha, beta and gamma

Question 48

Alpha particles

Answer 48

Radioactive particle made up of two protons and two neutrons

Question 49

Beta particle

Answer 49

A radioactive particle the same size and mass of an electron

Question 50

Gamma rays

Answer 50

Highest form of radiation