Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Gr 9 Science > Unit B Matter And Chemical Change > Flashcards

Unit B Matter And Chemical Change Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

Chemical property

A

Any property that describes how a substance reacts with another substance when formed a new substance is a chemical property

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Physical property

A

Any observational or measurable property without forming a new substance is a physical property

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Qualitative

A

Characteristic that may be described but not measured

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Quantitative

A

Can measured numerically

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Chemical properties

A 
Reacts w water
Air 
Oxygen 
Acids 
Pure substances
Toxicity 
Stability 
Combustibility
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Classification of matter

A

Pure substance
Element and compound

Mixture
Colloid- solution-mechanical or heterogeneous mixture - suspension

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Metals

State at rm temp

A

Solids

except mercury

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Non metals

State at rm temp

A

Some gases

Some solids

Only bromine a liquid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Metalloids

State at rm temp

A

Solids

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Appearance

Metals

A

Shiny luster

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Appearance

Non metals

A

Not vry shiny

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Metalloids

A

Can be shiny or dull

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Conductivity

Metals

A

Good conductors of heat and electricity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Conductivity

Non metals

A

Poor conductors of heat and electricity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Conductivity

Metalloids

A

May conduct electricity but poor conductors of heat

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Malleability and ductility

Metals

A

Malleable and ductile

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Malleability and ductility

Non metals

A

Brittle and non ductile

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Malleability and ductility

Metalloids

A

Brittle and non ductile

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Periods or rows

A

Horizontal rows

Side to side

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Groups or families

A

Vertical columns

Up and down

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Alkali metals

A

In group one

are highly reactive with water metals

that do not occur freely in nature

are softer than most other metals

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Alkaline earth metals

A

Metallic elements in group 2

very reactive with acid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Halogens

A

Non-metallic element in group 17

are the most reactive nonmetal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Noble gAses

A

In group 18

very stable gases

do not form compounds readily

25
Q

Atomic #

A

The number of positive protons in a nucleus

26
Q

Atomic mass

A

The total number of protons and neutrons in an atom

27
Q

Ionic charge

A

When neutral Adams collide and negative electron is transferred from one Adam to another and both atoms become particles called ions which have an electrical charge

28
Q

Cation

A

If an atom has lost electrons the overall charge becomes positive

29
Q

Anion

A

If it gains electrons the overall charge is negative

30
Q

Billiard ball

A

John dalton

31
Q

Raisin bun

A

JJ Thomson

32
Q

Planetary model

A

Hantro nagaoka

33
Q

Nuclear model

A

Ernest Rutherford

Canadian

34
Q

Atomic model

A

Neils Bohr

35
Q

Quantum model

A

Schrodinger

Newest one

36
Q

Atomic theory

A

Adams are made of positive nuclear that contain protons and neutrons

37
Q

Proton

A

Inside the nucleus

+

38
Q

Electron

A

In electron orbital

-

39
Q

Neutron

A

Inside the nucleus

0

40
Q

Ionic compounds

A

Bonds are created by the transfer of elections

High melting point

Distinct crystal shape

Formed from metallic and non metallic elements

Conducts electricity

Solid at rm temp

41
Q

Ionic compounds

A

Bonds are created by the transfer of elections

High melting point

Distinct crystal shape

Formed from metallic and non metallic elements

Conducts electricity

Solid at rm temp

42
Q

Molecular conpounds

A

Bonds are created by the sharing of electron

Low melting point

Does not always from crystal

Usually formed from only non-metallic elements

Does not form ions in solution

Usually does not conduct electricity

Solid liquid or gas at room temp

43
Q

Molecular compounds

A

Bonds are created by the sharing of electron

Low melting point

Does not always from crystal

Usually formed from only non-metallic elements

Does not form ions in solution

Usually does not conduct electricity

Solid liquid or gas at room temp

44
Q

Chemical reactions

A

When two or more substances combine to form two or more new substances

45
Q

Product

A

Substances that are produced in the reaction

THE PRODUCTS

46
Q

Reactants

A

Substances that undergoes a reaction

combined in my reaction

47
Q

Oxidation

A

A chemical reaction in the presence of oxygen

48
Q

Corrosion

A

The oxidation of metals and rocks in the presence of oxygen and moisture

example Rust

49
Q

Combustion

A

The highly Exothermic ( heat releasing )

combination of a substance with oxygen

resulting in the production of carbon dioxide water and energy

example burning methane gas

50
Q

Endothermic reaction

A

A chemical reaction that

absorbs energy

and

feels cold

51
Q

Exothermic reactions

A

I chemical reaction that

releases energy

and

feels warm

52
Q

The law of conservation of mass

A

In a chemical change the total mass of a new substance

this is always the same as the total mass of the original substance

53
Q

Heat

A

The greater the temperature of the faster the reaction

54
Q

Concentration

A

The greater the concentration of the substances the faster the reaction

55
Q

Surface area

A

Increasing the surface area of the reactants will increase the rate of the reaction

56
Q

Catalyst

A

A substance that helps increase the reaction rate

by lowering them out of energy needed to make the reaction occur

57
Q

What does WHIMS stand for

A

Workplace

hazardous

materials

information

system

58
Q

What is the name given to a substance that contains at least two kinds of particles uniformly scattered

A

Homogeneous mixture

Gr 9 Science (7 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions