Unit 2 Test Flashcards

0
Q

Cu&Zn

A

Mixture

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1
Q

NaHCO3

A

Compound

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2
Q

Al

A

Element

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3
Q

Thermochemistry-

A

Study of transfers of energy as heat occurring during chemical and physical changes

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4
Q

Temperature (T)

A

Average kinetic energy of the particles in a sample; as it increases, so does the temp.

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5
Q

Heat (q)

A

Energy transferred between samples because of their difference in temp.; measured in Joules (J) with calorimeters
(High heat->low heat)

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6
Q

Specific heat

A

The amount of energy transferred during a temp.

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7
Q

Ionic compounds

A

First element & second element +IDE

Or gang

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8
Q

Covalent compounds

A

Prefix first element & prefix second element +IDE

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9
Q

Triple point

A

The temperature & pressure conditions at which the solid, liquid, & gas of a substance coexist

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10
Q

Critical pressure

A

The lowest temperature in which a substance can exist as a liquid

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11
Q

Standard pressure:

A
1.0 ATM
760 mmHg
760 Torr
101.3 Kpa
30.00 in
30'C
273'K
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12
Q

Organic compound

A

Study of compounds containing carbon except CO2

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13
Q

Inorganic

A

Study of compounds that aren’t organic

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14
Q

Physical chemistry

A

Study of changes of matter and their energy

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15
Q

Analytical chemistry

A

Study of composition of materials

16
Q

Biochemistry

A

Study of substances & processes in living things

17
Q

Theoretical chemistry

A

Use of math and computers to understand chemical behaviors and design new compounds

18
Q

Matter

A

Anything that has mass and volume

19
Q

Atom

A

Smallest unit of an element that still holds the properties of that element

20
Q

Element

A

Pure substance made of only one type of atom

21
Q

Compound

A

Stubstance made of 2 or more different types of atoms that are chemically bonded

22
Q

Molecule

A

Type of compound in which bonds are covalent bonds made of 2 of the same elements

23
Q

Solid

A

Definite shape and volume
Atoms are packed together
Strong attractive forces between atoms
Only vibrate in place

24
Q

Liquids

A
Indefinite shape
Definite volume
Constant motion
Intermolecular forces
Close together
Incompressible
25
Q

Gas

A

Indefinite shape and volume
Moves very quickly
Far apart/ weak attractive forces
Compressible

26
Q

Sublimation

A

Solid to a gas

27
Q

Heterogenous matter

A

Matter that has parts with different properties

28
Q

Homogenous matter

A

Has similar properties throughout the substance

29
Q

Alloy

A

Substance made from two elements melted together

30
Q

Extensive

A

Change when size changes (e.g mass and volume)

31
Q

Intensive

A

Properties that do NOT change with size (eg density and ductility)

32
Q

Chemical change signals:

A
Color change
Temperature change
Gas produced
Precipitate formed
Irreversible
Light given off