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Chemistry Exam review Flashcards

1
Q

Compound

A

2 things together

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2
Q

Mixtures

A

more than one

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3
Q

Elements

A

One thing

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4
Q

pure substance

A

only one substance

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5
Q

BeF2 compound or element? and how many atoms

A

compound
Be- 1 F- 2

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6
Q

Ar compound or element? How many atoms

A

Element
-1

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7
Q

C12 H11 O12 Compound or element? how many atoms

A

Compound
c -12 h -11 O-12

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8
Q

Physical properties

A

Properties that don’t change the substance into something new.

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9
Q

Quantitative physical properties

A

Properties that are measured using numbers and units

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10
Q

quantitate physical properties

A

Properties describing using the 5 senses.

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11
Q

Most important physical properties (5)

A

Coulor, state
-solid, liquid + gas

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12
Q

Crystal form

A

Crystal or powdery

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13
Q

Hardness

A

Resist being dented or scratched

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14
Q

Solubility

A

Dissolve

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15
Q

Malleability

A

bent or flattened

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16
Q

ductility

A

be drawn into a wire.

17
Q

Lustre

A

reflect light

18
Q

Clarity

A

see through liquid

19
Q

Viscosity

A

The thinness of a liquid

20
Q

odour

21
Q

Molecules

A

2 or more atoms together

22
Q

atoms

A

smallest unit of matter

23
Q

Solutions

A

Looks same throughout
- Homogeneous

24
Q

mechanical mixtures

A

Looks different throughout
- Heterogenous

25
Q

A chemical change has a occur is..

A

Coulor change
odour change
bubbles
new solid
temp and light

26
Q

Physical change has occurred when..

A

Substance does not change it ‘s identify
Changes shape
dissolving
changes state

27
Q

Copper can be stretched unto long wire

28
Q

molasses pours very slowly

A

viscostcity

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