Science Test Revision Periodic Tables And Corrosion

Question 1

Properties of non metals

Answer 1

Good oxidising agents, forms acidic agents, higher electronegativity, poor conducter of heat and electricity, no luster

Question 2

Properties of metals

Answer 2

Malleable, opaque, ductile, luster, good conducters of heat and electricity

Question 3

Metals in periodic table

Answer 3

Bottom left, iron, gold, silver

Question 4

Non metals in periodic table

Answer 4

Far left, hydrogen, helium, carbon

Question 5

Solids at room temperature

Answer 5

Sodium, lithium, berilium, calcium, sulfur

Question 6

Liquids at room temperature

Answer 6

Bromine, mercury

Question 7

Gases at room temperature

Answer 7

Hydrogen, nitrogen, oxygen, fluorine, chlorine

Question 8

Mixture

Answer 8

Physically mixing 2 or more substances e.g. mud, smog

Question 9

Compound

Answer 9

Chemically mixing 2 or more diff atoms e.g baking soda, water

Question 10

Element

Answer 10

Chemically pure substance e.g helium, oxygen

Question 11

Molecule

Answer 11

Group of atoms bonded together e.g water, salt

Question 12

Matter

Answer 12

Made up of atoms e.g apple, person

Question 13

Atoms

Answer 13

Exists in diff forms e.g elements, molecules, compounds

Question 14

Combustion

Answer 14

Substance reacts with oxygen like wood, wick, gas, petrol

Question 15

How to stop combustion

Answer 15

By removing fuel, heat, oxygen

Question 16

Galvanizing

Answer 16

Applying zinc coating

Question 17

Alloying

Answer 17

Mixing metals or elements to form protective layer

Question 18

Coating

Answer 18

Coating surface with paint or enamel

Question 19

Combustible substances burn above

Answer 19

37.8

Question 20

Flammability

Answer 20

How easily something burns or ignites

Question 21

Corrosion

Answer 21

Chemical reaction, metal reacts with oxygen

Question 22

Rusting

Answer 22

Iron reacts with oxygen

Question 23

Diff between corrosion and rusting

Answer 23

Corrosion for all metals and rusting is for iron

Question 24

Metal+non metal=

Answer 24

Metal names 1st, non metal becomes IDE

Question 25

3/3+ elements combine and 1 is oxygen,

Answer 25

Metal named 1st, ending becomes ATE

Question 26

When 2 identical elements combine,

Answer 26

Name doesn’t change

Question 27

When 2 non metal elements combined,

Answer 27

Use di, trip, tetra, pentra