.

Question 1

In parallel

Answer 1

travels in more than one path

Question 2

In series

Answer 2

travels through one path

Question 3

Conductors

Answer 3

a substance in which electrical charge carriers usually electrons, move easily from atom to atom with the application of voltage.

Question 4

Insulators

Answer 4

a material in which the electron does not flow freely or the atom of the insulator have tightly bound electrons.

Question 5

Shell

Answer 5

a part of an atom where electrons are found orbiting the nucleus.

Question 6

Atomic Structure

Answer 6

consists of positively charged nucleus surrounded by negatively charged electrons revolving in orbits at varying distances from the nucleus. The constitution of the nucleus and the arrangement of the electrons differing with various chemical elements.

Question 7

Radiation

Answer 7

described as energy or particles from a source that travel through space or other mediums.

Question 8

Convection

Answer 8

the movement of heat because of the movement of warm matter.

Question 9

Current electricity

Answer 9

continuous flow of electrons in a circuit

Question 10

Static electricity

Answer 10

result of imbalance between negative and positive charges in an object.

Question 11

Resistance

Answer 11

a measure of the opposition to current flow in an electrical circuit

Question 12

Voltage

Answer 12

pressure from an electrical circuit power source that pushes charged electrons (current) through a conducting loop

Question 13

Switch

Answer 13

a device used for making and breaking electric current through the circuit

Question 14

Ohm’s Law

Answer 14

the current through a conductor between two points is directly proportional to the voltage across the two points.

Question 15

Radioisotopes

Answer 15

radioactive isotopes of an element. atoms that contain an unstable combination of neutrons and protons or excess energy in their protons

Question 16

Law of Conservation

Answer 16

energy/mass can neither be created nor destroyed.

Question 17

Independent variable

Answer 17

a variable that stands alone and isn’t changed by other variables

Question 18

Reactant

Answer 18

the substance that is initially present in a chemical reaction

Question 19

Controlled variable

Answer 19

a variable that is kept the same during an experiment

Question 20

Combustion

Answer 20

a chemical reaction between substances, usually including oxygen and usually accompanied by the generation of heat and light

Question 21

Conduction

Answer 21

transmission through or by means of a conductor also the transfer of heat through matter

Question 22

Dependent variable

Answer 22

the variable being tested and measure in an experiment

Question 23

Product

Answer 23

species formed from chemical reactions

Question 24

Electron Configuration

Answer 24

2,8,8

Question 25

Carbon dating

Answer 25

all living things absorb carbon from the atmosphere and food sources around them. When the plant/animal dies they stop absorbing that carbon but the radioactive carbon they’ve accumulated continues to decay

Question 26

Neutrons

Answer 26

neutral

Question 27

Protons

Answer 27

positive

Question 28

Electrons

Answer 28

negative

Question 29

α

Answer 29

alpha particles

Question 30

β

Answer 30

beta particles

Question 31

γ

Answer 31

gamma rays

Question 32

Chemical reaction signs

Answer 32

colour change, temperature change, volume change, formation of a solid, odour production, gas evolution, production of light, emission of heat

Question 33

Metal + acid =

Answer 33

hydrogen + salt

Question 34

Base + acid =

Answer 34

water + salt

Question 35

Carbonate + acid =

Answer 35

carbon dioxide + water + salt

Question 36

Endothermic reaction

Answer 36

absorbs heat and cools the surroundings

Question 37

Exothermic reaction

Answer 37

releases heat causing temperature of immediate surroundings to rise

Question 38

Magnesium + oxygen =

Answer 38

magnesium oxide

Question 39

Conservation of mass during reactions

Answer 39

the mass of one element at the start = the mass of the same element at the end

Question 40

V

Answer 40

I x R

Question 41

R

Answer 41

V divided by I

Question 42

I

Answer 42

V divided by R

Question 43

Factors of energy through an electric circuit

Answer 43

Electrons move and energy is transferred from the battery to the components of the circuit. Most energy is transferred to the light globe (or other energy user) where it is transformed to heat and light or some other form of energy.