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Science 9 > Chemistry > Flashcards

Chemistry Flashcards

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1
Q

What is Whmis

A

Workplace hazardous materials information systems

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2
Q

What is a Physical Change

A

Doesnt create a new substance

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3
Q

What is Solid to Liquid Change in Matter Called

A

Fusion

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4
Q

what is liquid to gas

A

evaporation

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5
Q

What is Gas to Liquid

A

Condensation

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6
Q

What is gas to solid state of matter change called

A

Deposition

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7
Q

What is a chemical change

A

When two or more materials
react and a new material is formed.
Ex. vinegar and baking soda makes carbon

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8
Q

What are physical property’s

A

property that describes the physical characteristics of a substance
Ex. Melting point, boiling point, malleability, ductility, solubility, conductivity, Colour, lustre, hardness, density, and crystal shape

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9
Q

What are chemical properties

A

How a substance reacts with another

Ex. Reaction with bases/acids, ability to burn, reaction with water, behaviour in air, reaction with heat.

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10
Q

What is matter

A

Anything that has mass and volume

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11
Q

What is a pure substance

A

A Pure substance cannot be broken down
or separated into any other type of
substance.

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12
Q

What is an element

A

Made up of a single atom

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13
Q

What Is a compound

A

A compound is made up of two or more atoms that are joined by a chemical bond

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14
Q

What are the types of mixtures

A
  • Heterozygous mixture: mechanical mixture, suspension mixture, and colloids.
  • Homozygous mixture
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15
Q

What is a mixture

A

when two or more substances blend

together.

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16
Q

What is a heterozygous mixture

A

When a mixture has two or more separate materials.

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17
Q

What is a mechanical mixture

A

Mechanical Mixture is a mixture in which the

different substances that make up the mixture are clearly visible.

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18
Q

What is a suspension mixture

A

A Suspension is a cloudy mixture in which tiny particles of one substance are floating within another.

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19
Q

What is a colloid

A

Colloid is a cloudy mixture in which tiny particles of one substance are held within another.

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20
Q

What is a homozygous mixture

A

Homogenous Mixture or Solution is when two or more substances mix together to look like one substance

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21
Q

What is Antoine Lavoisier: Conservation of Mass

A

Law of Conservation of Mass: state that during a chemical reaction, the mass of the starting materials will always equal the mass of the end materials.

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22
Q

What is Joseph Proust: Law of Definite Composition

A

The Law of Definite Composition: state that when elements form compounds, they will always combine in the same way.

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23
Q

What charge does a electron have

A

Negative charge

24
Q

How much mass does a electron have

A

Almost none

25
Q

What is in a nucleus of a atom

A

Neutrons and protons

26
Q

What is the mass of a protron

A

1AMU

27
Q

What is the charge of a protron

A

Positive

28
Q

What does a atomic number represent

A

Number of protons and electrons in a atom

29
Q

what is a electron orbit

A

the electrons spin around the nucleus in specific orbits or electron shells

30
Q

what is a neutron

A

a neutron is in the nucleus of an atom that has no charge

31
Q

what is the charge of a neutron

A

there is no charge

32
Q

what is the charge of a neutron

A

there is no charge

33
Q

how can you determine the amount of neutrons in a atom

A

the atomic mass minus the atomic #

34
Q

what does aq stand for

A

aqueous solution

34
Q

what does aq stand for

A

aqueous solution

35
Q

what is the law of definite composition

A

when a certain compound forms, the ratio of elements to each other will always be the same

36
Q

what is a ionic compound

A

positive metal ion with a negative non-metal

37
Q

does a ionic compound give away or gain electrons

A

gives away

38
Q

does a ionic compound give away or gain electrons

A

gives away

39
Q

what is an anion

A

negatively charged(gains electrons)

40
Q

what is an cation

A

positively charged(gives electrons away)

41
Q

what do multivalent ions have that ionic doesn’t

A

transition metals with multiple ion forms/ roman numerals

41
Q

what do multivalent ions have that ionic doesn’t have

A

transition metals with multiple ion forms/ roman numerals

42
Q

what do you do to the end of a ionic compound

A

add “ide”

43
Q

what comes first when writing out an ionic compound

A

the positively charged metal ion

44
Q

what comes second when writing out an ionic compound

A

the negatively charged non-metal ion with “ide” at the end

45
Q

what are molecular compounds

A

a compound made up of two or more non-metal atoms

46
Q

what are molecular compounds

A

a compound made up of two or more non-metal atoms

47
Q

what are properties of molecular compounds

A

low melting point, low boiling point, varying solubilities, not good conductors

47
Q

what are properties of molecular compounds

A

low melting point, low boiling point, varying solubilities, not good conductors

48
Q

what are properties of an ionic compound

A

high melting point, high boiling point, soluble in water, good conductor

48
Q

what are properties of an ionic compound

A

high melting point, high boiling point, soluble in water, good conductor

49
Q

what do molecular compounds use

A

prefixes

50
Q

what do you not do when naming a molecular compound

A

add a prefix to the first element if the is one, only add a prefix to the second

50
Q

what do you not do when naming a molecular compound

A

add a prefix to the first element if the is one, only add a prefix to the second

51
Q

what are the first 10 prefixes

A

mono, di, tri, tetra, penta, hexa, pecta, octa, nona, deca

Science 9 (3 decks)

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