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Science > Matter and Chemical Change > Flashcards

Matter and Chemical Change Flashcards

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1
Q

WHMIS

A

Workplace Hazardous Materials Information System, easy to see warning signs

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2
Q

MSDS (SDS)

A

Material Safety Danger Sheet: detailed info sheet about potentially hazardous product

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3
Q

States of matter

A

Solid, liquid, gas

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4
Q

Condensation

A

change of state from gas to liduid

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5
Q

Sublimation

A

solid to gas

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6
Q

Deposition

A

gas to solid

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7
Q

Properties

A

characteristic that describes a particular substance

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8
Q

Physical Property

A

property that describes the physical appearance and composition of a substance

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9
Q

Physical Change

A

Change in appearance or state of a substance that doesn’t change the composition (eg: ripping up paper)

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10
Q

Malleable

A

Can be pounded or rolled into sheets

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11
Q

Ductile

A

can be stretched into a long wire`

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12
Q

solubility

A

substance that can dissolve

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13
Q

Density

A

Amount of mass in a given volume of a substance

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14
Q

Conductivity

A

ability to conduct electricity or heat

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15
Q

Chemical Property

A

how something reacts with another substance

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16
Q

Chemical Change

A

when a new substance has completely different properties than the old one

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17
Q

Pure Substance

A

Substance made up of only one kind of matter

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18
Q

Element

A

Pure substance that cannot be broken down

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19
Q

Compound

A

Chemical combo of 2 or more elements with a specific ratio

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20
Q

MIxture

A

Combo of pure substances

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21
Q

Mechanical Mixture

A

Heterogenous mixture where substance contained are visible

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22
Q

Solution

A

homogenous mixture

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23
Q

Aqueous Solution

A

A solution in which water is the solvent

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24
Q

Suspension

A

Cloudy mixture where tiny particles are held within a another, particles can be separated

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25
Q

Colloid

A

Suspension but particles cannot be separated

26
Q

Electrons

A

Invisible, negatively charged particles

27
Q

Electron Shells

A

orbit of electrons around the nucleus of an atom

28
Q

Protons

A

Positively charged atom in the nucleus of a cell

29
Q

Nuetrons

A

Neutral particle in the nucleus of a cell

30
Q

Atomic Mass

A

Mass of one atom of an element calculated from the total number of protons, neutrons and electrons

31
Q

Period

A

Horizontal row on the periodic table

32
Q

Group or Family

A

Vertical row on the periodic table

33
Q

Atomic Number

A

Number of protons in the nucleus of one atom of an element

34
Q

Atomic Mass Unit

A

measure of atomic mass

35
Q

Mass Number

A

The sum of the number of protons and neutrons in an atom

36
Q

Metals

A

elements that are shiny, malleable, ductile, and/or conduct electricity

37
Q

Non-metals

A

Elements that are dull, brittle and do not conduct electricity

38
Q

Metalloids

A

element that has both metal and non-metal properties

39
Q

Alkali metals

A

group 1 elements in the periodic table (not including hydrogen), super reactive

40
Q

Alkaline-earth metals

A

Group 2 elements, not as reactive as group 1

41
Q

Halogens

A

Group 17 elements, most reactive non-metals

42
Q

Noble gases

A

Group 18 elements, most stable and unreactive metals

43
Q

Chemical Formula

A

Combo of symbols that represents a compound

44
Q

Ionic Compound

A

Pure substance formed when at least 1 metal and 1 non-metal combine

45
Q

Ions

A

Atom that has become electrically charged because of losing or gaining electrons

46
Q

Polyatomic Ions

A

Group of atoms acting as 1, with a charge

47
Q

Molecule

A

group of atoms joined by covalent bonds

48
Q

Molecular Compound

A

pure substance formed when non-metals combine

49
Q

Chemical Reaction

A

Reaction that takes place when 2 or more substances react to form new substances

50
Q

Reactants

A

substance that reacts with another substance in a chemical reaction to form a product

51
Q

Products

A

What you get from a chemical reation

52
Q

Exothermic Reaction

A

Production of heat or energy in a chemical reaction

53
Q

Endothermic Reaction

A

Absorption of heat ore energy in chemical reaction

54
Q

Combustion

A

Chemical reaction that occurs when oxygen reacts with a substance to form a new substance and gives off energy

55
Q

Corrosion

A

Slow chemical reaction that occurs when oxygen in the air reacts with metal

56
Q

Cellular Respiration

A

Chemical reaction that takes place in cells

57
Q

Conservation of mass

A

Law that mass is not created or destroyed in chemical change

58
Q

Closed System

A

An experiment where no new chemicals enter or leave

59
Q

Open System

A

New chemicals can enter or leave as they please

60
Q

Catalysts

A

Substance that makes chemical reactions happen faster

61
Q

Enzyme

A

Catalysts involved in chemical reactions in living things.

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