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Chem > Elements 21-40, Unit 2 > Flashcards

Elements 21-40, Unit 2 Flashcards

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1
Q

Sc

A

Scandium

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2
Q

Ti

A

Titanium

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3
Q

V

A

Vanadium

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4
Q

Cr

A

Chromium

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5
Q

Ma

A

Manganese

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6
Q

Fe

A

Iron

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7
Q

Co

A

Cobalt

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8
Q

Ni

A

Nickel

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9
Q

Cu

A

Copper

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10
Q

Zn

A

Zink

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11
Q

Ga

A

Gallium

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12
Q

Ge

A

Germanium

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13
Q

As

A

Arsenic

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14
Q

Se

A

Selenium

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15
Q

Br

A

Bromine

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16
Q

Kr

A

Krypton

17
Q

Simple distillation

A

Separate liquid from solution
Basically evaporation but gas goes into tubes and cooled back down into a liquid leaving the distillate as water and the salt is left in the original container

18
Q

Separating funnel

A

Water and oil (ex) put in funnel, slowly release until the line of divide. Oil is left on top water is in the beaker below

19
Q

Exothermic

A

Gives of heat

20
Q

Endothermic

A

Uses heat energy

21
Q

Solute

A

A substance dissolved in a solution
Ex: salt in water

22
Q

Solvent

A

Substance that dissolves a solute
Ex: water

23
Q

Residue

A

Material remaining after evaporation or distilling

24
Q

Filtrate

A

Material that has passed through a filter
Ex: most of the time water

25
Q

Precipitate

A

Formation of a solid in a solution

26
Q

Absolute error

A

l experimental - accepted l = g/ml

27
Q

% error

A

l experimental - accepted l
______________________________ x 100 = %
Accepted

28
Q

Physical property

A

Can be observed without changing identity of a substance

29
Q

Chemical property

A

Describes ability of substance to undergo changes in identity
Ex: flammability, reactivity, toxicity, possible chemical bonds

30
Q

Physical change

A

Changes form of substance without changing identify
Chemical properties remain the same

31
Q

Chemical change

A

Changes identity of substance
Products have different properties

32
Q

Physical change main observations

A

Change in state/ phase
Change in size
Change in shape

33
Q

Indications of chemical change

A

Production of light
Production of heat
Production of gas (bubbles)
Color change *
Change in odor
Formation of a precipitate
Gets cold without coolant
Gives of smoke
Change in texture *
Change in appearance *

34
Q

Observation

A

Anything you know based off of senses

35
Q

Inference

A

An educated guess based off of senses

36
Q

Alloy

A

Homogenous mix of metals

37
Q

Volume vs mass vs density calculation

A

Mass
Density Volume

38
Q

Chromatography

A

Coloring agents in food or inks
Ink spread on filter paper. Paper placed in solvent. Attracts chemicals on its way up

Chem (6 decks)

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