PARTICLE THEORY 1 vocab

Question 1

Matter

Answer 1

Anything that takes up space

Question 2

Heat

Answer 2

the transfer of thermal energy between substances

Question 3

Pure Substance

Answer 3

substances that are made up of only one kind of particle and have a fixed or constant structure

Question 4

Celsius Scale

Answer 4

also known as the centigrade scale, is a temperature scale based on 0o for the freezing point of water and 100o for the boiling point of water

Question 5

Expansion

Answer 5

the increase in length, area, and volume of materials when they are subjected to an increase in temperature

Question 6

Melting (fusion)

Answer 6

The process by which a substance changes from a solid-state to a liquid state

Question 7

Freezing

Answer 7

the process that causes a substance to change from a liquid to a solid

Question 8

Scientific theory

Answer 8

an explanation for why things work or how things happen

Question 9

Temperature

Answer 9

the measure of hotness or coldness expressed in terms of any of several scales, including Fahrenheit and Celsius

Question 10

Melting point

Answer 10

the point at which materials changes from a solid to a liquid

Question 11

Fahrenheit scale

Answer 11

In Fahrenheit scale, it divides the boiling pointsand the freezing of water into 180 degrees. We know that the freezing point of water is 32°F and the boiling point is 212°F

Question 12

Contraction

Answer 12

the decrease in the size of an object on cooling

Question 13

Vapourization

Answer 13

the process in which the liquid state changes into the vapour state. As a result of an increase in temperature

Question 14

Condensation

Answer 14

the process by which water vapour in the air is changed into liquid water

Question 15

particle theory

Answer 15

A scientific model wxplain the rules of matter

Question 16

kinetic energy

Answer 16

the energy an object has because of its motion

Question 17

boiling point

Answer 17

the temperature point at which the material transforms into the gas phase in the liquid phase

Question 18

kelvin scale

Answer 18

A scale of temperature beginning at absolute zero (-273.15°C or -459.67°F)

Question 19

Electromagnectic waves

Answer 19

an interaction that occurs between particles with electric charge via electromagnetic field

Question 20

Sublimation

Answer 20

a chemical process where a solid turns into a gas without going through a liquid stage

Question 21

Deposition

Answer 21

the process in which a substance from its gaseous state changes into its solid state directly without changing into its liquid state

Question 22

Atomos

Answer 22

1. which means uncuttable
   2.the smallest unit that retains the properties of an element

Question 23

Thermometres

Answer 23

a device used for measuring temperature

Question 24

Heating Curve

Answer 24

a graphical representation of the correlation between heat input and the temperature of a substance

Question 25

Conduction

Answer 25

a graphical representation of the correlation between heat input and the temperature of a substance

Question 26

Convection

Answer 26

The process of heat transfer from one part of a fluid to another part by the actual movement of the particles of the fluid

Question 27

Radiation

Answer 27

The process of the transfer of the heat from one place to another place without heating the intervening medium

Question 28

nuclear fusion

Answer 28

the process by which two light atomic nuclei combine to form a single heavier one while releasing massive amounts of energy.