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Chem > Chemistry 2 Test > Flashcards

Chemistry 2 Test Flashcards

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1
Q

What does density depend on

A

Mass and volume

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2
Q

What is matter what are some examples of items that are not made of matter

A

Matter is something that takes up space

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3
Q

Extensive vs intensive and example of each

A

Extensive depends on amount of substance
Intensive depends on type of matter

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4
Q

What is a physical property give some examples

A

Can be observed or measured without changing the composition melting malleability conductivity

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5
Q

Heterogenous vs homogeneous

A

Herero is 2 or more phases not uniform throughout

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6
Q

Phase

A

Part if a sample with uniform composition and properties

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7
Q

What is a substance know the two types

A

Matter that has uniform properties and definite composition element and compound

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8
Q

What is an element

A

Simplest form of matter that has a unique set of properties

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9
Q

What is a compound how can we separate a compound

A

Has two or more elements chemically. Index in a fixed proportion-not physically but chemically

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10
Q

What is a solution

A

A homogeneous mixture

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11
Q

What is a chemical property

A

A chemcial property has potential to change completion flammability reactivity and oxidation

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12
Q

What is a chemcial change

A

Produces matter with a different composition than the original

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13
Q

5 signs of chemical change

A

Change in color odor temperature produces light or sound

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14
Q

What is a barometer

A

Instrument that measure air pressure

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15
Q

What is the si unit for pressure

A

Pascal

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16
Q

What causes gas pressure

A

Collisions of gas particles against and objects

17
Q

Is evaporation a cooling or heating process

A

Cooling

18
Q

When liquid is boiling what happens to the temps true

A

Stays the same

19
Q

What happens to boiling point as you increase in altitude

A

Decreases because less pressure

20
Q

When a substance is in a solid state are the particles moving

A

Yes vibrating in a fixed position

21
Q

What happens to kinetic energy when tempature is increased

A

Increase

22
Q

Know the phase changes

A

Condensation gas to liquid
Melting solid to liquid
Sublimation solid to gas

Chem (4 decks)

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