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7 Dunning_Victoria PS > Exams - Preperation > Flashcards

Exams - Preperation Flashcards

1
Q

What is the Independent variable?

A

What is purposefully being changed? What is the cause?

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2
Q

What is the dependent variable?

A

What is being measured? What is the effect?

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3
Q

What is the control group?

A

The normal group being used for comparison

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4
Q

What is the experimental group?

A

The group that is being tested and purposefully changed

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5
Q

What is the constant?

A

Factors that do not change in the experiment

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6
Q

What does qualitive mean?

A

Descriptive data

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7
Q

What does quantitative mean?

A

Numerical data

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8
Q

What is accuracy?

A

The degree to which the experimental result agrees with the accepted value

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9
Q

What is precision?

A

The degree to which measurements agree with each other

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10
Q

What is an observation?

A

Objective; based on the 5 senses not an opinion

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11
Q

What is an inference?

A

Subjective; a guess about an observation

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12
Q

What is a hypothesis?

A

A testable prediction that attempts to write an answer

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13
Q

What is the atomic number?

A

Tells the number of protons in an element

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14
Q

What is an isotope?

A

Atoms of the same element with a different number of neutrons

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15
Q

What is the hyphen form?

A

The name of he element hyphen the mass number

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16
Q

What is the nuclear form?

A

The name of the element with the mass number in the top left

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17
Q

What is the mass number?

A

Tells the number of protons and neutrons in an element

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18
Q

What is an atomic mass?

A

Weighted average of all the different versions of an element

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19
Q

What are metalloids?

A
  • solids
  • semi-conductors
  • physical properties like metals
  • chemical properties like nonmetals
20
Q

What are groups?

A

The vertical columns on the periodic table

21
Q

What are periods?

A

The horizontal rows on the periodic table

22
Q

What are nonmetals?

A
  • Gases, or dull brittle solids
  • poor conductors
  • right of the metalloids
23
Q

What are metals?

A
  • shiny, silvery solids
  • good conductors if heat and electricity
  • malleable and ductile
  • located to the left of the malloids
24
Q

What is matter?

A

Anything that takes up space and has mass

25
Q

What are substances?

A

All particles in matter are identical (fixed composition)

26
Q

What is an element?

A

Simplest form of matter from which more complex substances are made

27
Q

What are compounds?

A

two or more elements chemically combined in a fixed proportion and can only be broken down by chemical reactions

28
Q

What are mixtures?

A

Two or more substances physically combined

29
Q

What are colloids?

A

small particles remain dispersed evenly throughout mixture

Suspension- larger particles that appear uniformly distributed but will settle out over time or if not being mixed

30
Q

What is the Tyndall effect?

A

The scattering of light by a mixture

31
Q

What are homogeneous mixtures?

A

Compounds are evenly distributed on a microscopic level

32
Q

What are heterogeneous mixtures?

A

Substances in the mixture are evenly spread out

33
Q

What is a physical property?

A

The substance does not change

34
Q

What is a chemical property?

A

The substance does not change

35
Q

What is a physical change?

A

Only affects somethings physical properties

36
Q

What is a chemical change?

A

Only affects somethings chemical properties

37
Q

What is the law if conservation of matter?

A

Matter cannot be created or destroyed

38
Q

What is density?

A

A measure or compactness or consistency of a material

39
Q

What is temperature?

A

Measure of the average kinetic energy of particles in an object

40
Q

What is thermal energy?

A

The sum of the kinetic energy and potential energ it particles in an object

41
Q

What is solubility?

A

Maximum amount of solute that can dissolve in a certain amount of solvent at a given temp

42
Q

What group are alkali metals in?

A

Group 1

43
Q

What group are alkaline earth metals in?

A

Group 2

44
Q

What group are rare earth metals in?

A

Group 3

45
Q

What group are the transition metals in?

A

Group 3-12

46
Q

What group are halogens in?

A

Group 17

47
Q

What group are noble gases in?

A

Group 18

7 Dunning_Victoria PS (7 decks)

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