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Science (Gr. 9) > Chemistry > Flashcards

Chemistry Flashcards

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1
Q

Thermometer

A
  • used to measure the temperature
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2
Q

Beaker

A
  • A glass container to hold large amounts of liquid
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3
Q

Bunsen Burner

A
  • used to heat materials in the lab
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4
Q

Erlenmeyer Flask

A
  • holds liquids, when stirring liquids won’t easily spill out
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5
Q

Flint Striker

A
  • used to ignite the Bunsen burners
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6
Q

Graduated Cylinder

A
  • accurately measures amounts of liquid
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7
Q

Motor and Pestle

A
  • used to grind up solids into a powder
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8
Q

Medicine Dropper

A
  • used to transfer a small amount of liquid
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9
Q

Rubber Stopper

A
  • used to plug the top of test tubes or Erlenmeyer Flasks when transporting
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10
Q

Retort Stand

A
  • used to hold objects over a Bunsen burner
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11
Q

Safety goggles

A
  • must be worn during every lab to prevent eye damage
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12
Q

Scoopula

A
  • used to scoop out small samples of powder
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13
Q

Test tubes

A
  • A glass container to hold small amounts of liquid
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14
Q

Test tube brush

A
  • used for cleaning on glassware, including test tubes
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15
Q

Test tube rack

A
  • used to hold multiple test tubes for an experiment
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16
Q

Tongs

A
  • used for holding/carrying hot beakers
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17
Q

Utility clamp

A
  • May be attached to a retort stand and be made to hold a test tube or thermometer
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18
Q

HHPS

A

Household hazardous products symbols

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19
Q

WHMIS

A

Workplace hazardous material information symbols

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20
Q

Precipitate

A

A substance produced when solutions mix

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21
Q

Name all 4 HHPS symbols

A
  1. DANGER: poisonous
  2. Danger: explosive
  3. Danger: corrosive
  4. Danger: flammable
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22
Q

What does the diamond shaped symbol mean?

A

Warning

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23
Q

What does the triangle shaped symbol mean?

A

Caution

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24
Q

HHPS symbols are ___________ shaped

A

Octagonal

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25
Q

WHMIS symbols are ______ shaped

A

Circle

26
Q

Symbol with broken test tube and the liquid inside spraying on hands

A

Corrosive material

27
Q

Symbol with flame

A

Flammable and combustible material

28
Q

Symbol with test tube looking object

A

Compressed gas

29
Q

Symbol with “R” and test tube in the middle with liquid spraying up

A

Dangerously reactive material

30
Q

Symbol with skull

A

Poisonous and infectious material causing immediate and toxic effects

31
Q

Symbol with flame and circle underneath

A

Oxidizing material

32
Q

Symbol with “T” exclamation mark

A

Poisonous and infectious material causing other toxic effects

33
Q

Symbol with three circles all touching at the centre, not fully connected draw circles on the outside

A

Bio hazardous infectious material

34
Q

6 steps to the scientific method

A
  1. Ask a question
  2. Do background research
  3. Constrict a hypothesis
  4. Test your hypothesis by designing and performing an experiment
  5. Analyze your data and conclusion
  6. Communicate your results
35
Q

When people use words to describe the qualities of objects and events, the observations are ______________

A

Qualitative

36
Q

When observations include a number and unit, they are said to be __________

A

Quantitive

37
Q

Viscosity (P or C)

A

The resistance of a substance to being easily poured (physical)

38
Q

Lustre (P or C)

A

The ability of a substance to reflect light (Chemical)

39
Q

Hardness (P or C)

A

The resistance of a substance to scratching or penetration (Physical)

40
Q

Malleability (P or C)

A

The ability of a substance to be moulded or flattened out into a sheet (Chemical)

41
Q

Solubility (P or C)

A

The ability of a substance to dissolve into a solvent (Physical)

42
Q

Ductility (P or C)

A

The ability of a substance to be stretched out into a wire-like shape (Chemical)

43
Q

Transparency (P or C)

A

The ability of a substance to transmit light (Chemical)

44
Q

Brittleness (P or C)

A

The ability of a substance to break easily into pieces (Chemical)

45
Q

Density (P or C)

A

A measure of how much mass is contained in a given unit volume of a substance (Physical)

46
Q

Independent variable

A

What you change in the experiment (plot on the x-axis)

47
Q

Dependent variable

A

What your measure in the experiment (plot on the y-axis)

48
Q

Controlled variable

A

Must be kept the same for all task groups during experiment

49
Q

The particle theory

A
  1. Matter is made up of tiny particles: atoms and molecules
  2. Particles are always moving
  3. Particles of matter are held together by attractive forces
  4. There are spaces between particles
  5. Each substance has unique particles that are different from the particles of other substances
50
Q

Evidence of a chemical change

A

A change of color, a change an odour, bubbles are visible, new solid is seen, or a change in temperature or energy

51
Q

Chemical property

A

When a substance becomes another substance through the process of shape change

52
Q

Physical change

A

The composition of the substance remains exactly the same. Now new substances are made.

53
Q

Pure substances

A
  • Pure type of particle

- have characteristics of physical and chemical change

54
Q

Element

A
  • 1 type of atom only
  • found on periodic table
  • pure
55
Q

Molecules

A
  • two or more atoms on a fixed ratio
  • electrons shared
  • pure
56
Q

Ionic compounds

A
  • two or more atoms in a fixed ratio
  • attraction between ions
  • pure
57
Q

Impure substances

A

-mixture

58
Q

Homogeneous

A
  • 1 phase
59
Q

Heterogeneous

A
  • 2 or more phases
60
Q

Solution

A
  • mixture at the molecular level
  • transparent is gaseous or liquid
  • homogeneous
  • impure
61
Q

Suspension

A
  • Small particles
  • may or may not settle out
  • opaque or translucent
  • heterogeneous
  • impure
62
Q

Mechanical mixture

A
  • large particles can be identified by the naked eye
  • can be easily separated by mechanical means
  • heterogeneous
  • impure

Science (Gr. 9) (2 decks)

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