Exam Final study

Question 1

What are the particle theories?

Answer 1

All matter is made out of tiny pieces called particles.

Question 2

What happens to particles when heat is added?

Answer 2

Particles move faster , attractio between them decreses.

Question 3

What happens to particles when heat is removed

Answer 3

Motion decreases, particles move closer together, attraction increases.

Question 4

Physical properties of matter:

Answer 4

STATE, DULL, COBUR, CLARITY, TEXTURE, TRANSPARENT, ODOUR, LUSTER, OPAQUE, CONDUCTIVITY, TASTE, MALLEABILITY, VISCOSITY, FREEZING POINT, MAGNET…ETC.

Question 5

Chemical properties of matter are:

Answer 5

Flammability, reactivity with water, reactivity with oxygen, reactivity with acid, reactivity with light.

Question 6

What does quantitative mean and qualitative?

Answer 6

Quantitive is described with number units, Qualitative is described by the appearance

Question 7

How do we know if a physical change occured?

Answer 7

When something changes its form or state, and no new substance is created.

Question 8

how to determine if a chemical change occured:

Answer 8

new color, light or heat, bubbles or gas, precipitate, odour change

Question 9

The triangle of density formula

Answer 9

M/D =V . D X V = M . D/M = V …ETC.

Question 10

State the dwarf and outer and inner planets:

Answer 10

Jupiter- outer
pluto-dwarf
mars-inner
neptune-outter
venus-inner

Question 11

What is a dwarf planet

Answer 11

A small planet which is missing certain technical citeria that is need for it to be classified as such.

Question 12

Static electricity is due to..

Answer 12

friction

Question 13

some materials gain electrons and end up with a…

Answer 13

negative

Question 14

some materials lose electrons and end up with a..

Answer 14

positive

Question 15

state the 3 laws of electric charges

Answer 15

Like charges REPEL
Opposite charges ATTRACT
Neutral objects are attracted to both charges

Question 16

Planets in order from the sun:L

Answer 16

sun, mercury, venus, earth, mars, jupiter, saturn, uranus, neptune, pluto

Question 17

What is the difference between rotation and revolution:

Answer 17

Rotation is when the earth spins, while revolution is when the earth revolves around another like the sun.

Question 18

Star definition

Answer 18

giant ball of hot gas

Question 19

comet definition

Answer 19

large objects made out of dust and ice

Question 20

planet definition

Answer 20

Celestial body that orbits the sun

Question 21

asteroid definition

Answer 21

small rocky object that orbits the sun

Question 22

What is current.

Answer 22

a measure of how many electrons pass a point (amps ammeter I)

Question 23

What is electrical potential difference

Answer 23

Voltage ) measure of how much energy the current has

Question 24

protons mass , charge and location

Answer 24

1836 (large),, positive, nucleus

Question 25

electrons mass , charge and location

Answer 25

1837, negative, orbit

Question 26

neutrions mass , charge and location

Answer 26

1, neutral, nucleus

Question 27

calculating tne protons, electorns and neutronsL

Answer 27

PROTONS: atomic number
ELECTRONS: Atomic numb er
NEUTRONS: Atomic number - atomic mass