matter

Question 1

those which the substance shows by itself without interacting with another substance such as color, melting point, boiling point, density

Answer 1

physical properties

Question 2

those which the substance shows as it interacts with, or transforms into, other substances such as flammability, corrosiveness

Answer 2

chrmical properties

Question 3

depends upon how much matter is being considered. This property change when the amount of the substance changes.

Answer 3

extensive property

Question 4

those which the substance shows as it interacts with, or transforms into, other substances such as flammability, corrosiveness

Answer 4

Chemical Properties

Question 5

does not depend upon how much matter is being considered. This property does not depend on the amount of the substance.

Answer 5

intensive property

Question 6

when a substance changes its appearance without changing its composition.

Answer 6

physical xhange

Question 7

a transition of matter from one state to another.

Answer 7

phase change

Question 8

also known as a chemical reaction.

Answer 8

chemical change

Question 9

when a substance is transformed into another substance with a totally different composition and properties.

Answer 9

chemical change

Question 10

change that is always accompanied by the formation of a new substance.

Answer 10

chemical change

Question 11

the simplest type of substance with unique physical and chemical properties.

Answer 11

element

Question 12

An element consists of how many types of atoms?

Answer 12

only one type

Question 13

can an element be broken down into simpler substances ever?

Answer 13

only chemical. jk no

Question 14

elements have been identified
•elements occur naturally on Earth
•elements have been created by scientists

Answer 14

118,94,24

Question 15

(synthetic elements -

Answer 15

produced in nuclear reactions)

Question 16

have high thermal and electrical conductivity.

Answer 16

metals

Question 17

• mobile particles that can carry thermal or heat energy from one point of the material to another.

Answer 17

Thermal conductivity

Question 18

charge cariers that are free to move and carry electrical charges from one point of the material to another.

Answer 18

electrical conductivity

Question 19

allows metals to be rolled, flattened or hammered into sheets without breaking.

Answer 19

malleability

Question 20

• allows metals to be drawn into wires.

Answer 20

ductility

Question 21

metals reflect the light that strikes their surfaces, making them appear shiny.

Answer 21

luster

Question 22

usually do not conduct heat and electricity very well.

Answer 22

nonmetals

Question 23

They have little luster and seldom reflect light. are brittle, neither malleable nor ductile.

Answer 23

Nonmetals

Question 24

They may be solid (such as carbon and sulfur), liquid (bromine) or gas (oxygen and nitrogen) at room temperature.

Answer 24

bonmetals

Question 25

have properties intermediate between metals and nonmetals.

Answer 25

metalloids

Question 26

Because of their properties, ? like silicon and germanium are used in electronic industry aS semiconductors.

Answer 26

metalloids

Question 27

Elements are composed ? kind o atom

Answer 27

one

Question 28

conpounds have? atoms?

Answer 28

two or more

Question 29

combination of two or more pure substances in which each pure substance retain sits individual chemical properties.

Answer 29

mixture

Question 30

a mixture that does not blend smoothv throughout and in which the individual substances remain distinct.

Answer 30

hetero

Question 31

a mixture that has composition throughout: it alwavs has a single phase.

Answer 31

homo

Question 32

This process separates the parts or a mixture by hand when the panicles are large enough to be seen cleariv.

Answer 32

mechanical

Question 33

using dry mixture whIch contains substances of different sizes by passing Ir inrougn a device holes.

Answer 33

Sifting or Seiving

Question 34

one component of the mixture has magnetic properties, you could use c magnet to separate ine mixture. Iron, nickel, and cobalt are a materials that are mooneic

Answer 34

magnetic

Question 35

a process of separating The • solid-iquid components of mixtures by gently pouring out the liquid so as not to disturb the solids that readily settle at the bottom of the container.

Answer 35

decantation

Question 36

uses a porous barrier seperate asolid Trom a liquid.

Answer 36

filteation

Question 37

distribution of a solute in two immiscible solvents. A substance previously dissolved in a given solvent may be 'extracted' or removed by shaking the solution with another solvent where it is more soluble.

Answer 37

extraction

Question 38

used for extraction

Answer 38

seperating funnel

Question 39

solid changes to vapor without melting, i.e., without going through the liquid state.

Answer 39

sublimation

Question 40

• It can be used to separate two solids present in a mixture when one of the solids sublimates but not the other.

Answer 40

sublimation

Question 41

physical separation technique that is based on differences in the boiling points of the substances involved.

Answer 41

Distillation

Question 42

The solution is heated, causing the evaporation of the more volatile component; thus, separating it as a vapor which is changed back to liquid by cooling (condensation).

Answer 42

Distillation

Question 43

allows the volatile liquid to escape, letting the solute particles to be collected on the surface of the container.

Answer 43

evap

Question 44

used for evap

Answer 44

• It is usually carried out using an evaporating dish or porcelain dish. The heat of the dish is sufficient for appreciable evaporation. Residue is the solid particle left in the dish.

Question 45

separation technique that results in the formation of pure solid particles of a substance from a solution containing the dissolved substance.

Answer 45

Crystallization

Question 46

a process of separating mixtures by encouraging different parts of the mixture to move through an absorbing material at different rates.

Answer 46

Chromatography

Question 47

The process of separation in chromatography is due to ?

Answer 47

capillary action (the rising of the surface of a liquid in small tubes) and solubility.

Question 48

speeds up the settling of the precipitate

Answer 48

Centrifugation