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Chemistry 113 > Exam 1 Study Items > Flashcards

Exam 1 Study Items Flashcards

1
Q
A
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2
Q

Group IA is known as:

A

Alkali Metals

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3
Q

Group IIA is known as:

A

Alkaline Earth Metals

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4
Q

Group VIA is known as:

A

Chalcogens

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5
Q

Group VIIA is known as:

A

Halogens

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6
Q

Group VIIIA is known as:

A

Noble Gases

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7
Q

What classification of matter is salt water?

A

Homogeneous mixture

You cannot distinguish the salt when it dissolves into Na+ and Cl- ions and evenly mixes with the water molecules.

In a homogeneous mixture, components are evenly distributed.

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8
Q

What classification of matter is dry ice(CO2)?

A

Pure substance

Dry ice is composed of one type of molecule, CO2, in a solid state.

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9
Q

What classification of matter is bronze (a metal alloy)?

A

Mixture

Bronze is composed of copper and tin. While they mix together, they do not form a new chemical substance with a fixed ratio like a compound would.

Alloys are mixtures of 2 or more metals.

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10
Q

Classify the following as either an extensive or intensive property:

Mass

A

Extensive

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11
Q

Classify the following as either an extensive or intensive property:

Length

A

Extensive

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12
Q

Classify the following as either an extensive or intensive property:

Density

A

Intensive

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13
Q

Classify the following as either an extensive or intensive property:

Volume

A

Extensive

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14
Q

Classify the following as either an extensive or intensive property:

Temperature

A

Intensive

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15
Q

Classify the following as either an extensive or intensive property:

Color

A

Intensive

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16
Q

Classify the following as either an extensive or intensive property:

Melting point (or any phase change temperature)

A

Intensive

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17
Q

Going from a solid to a liquid is called?

A

Melting

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18
Q

Going from a liquid to a solid is called?

A

Freezing

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19
Q

Going from a liquid to a gas is called?

A

Vaporization
(boiling or evaporation)

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20
Q

Going from a gas to a liquid is called?

A

Condensation

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21
Q

Going from a solid to a gas is called?

A

Sublimation

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22
Q

Going from a gas to a solid is called?

A

Deposition

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23
Q

Charging a cell phone is an example of what kind of change?

A

Chemical

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24
Q

What is the SI unit for amount of a substance?

A

Mole

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25
Q

Which subatomic particles are found in the** nucleus of an atom**?

A

Protons and neutrons

26
Q

All atoms of a given element have the same:

A

Number of protons

27
Q

Isotopes of a given element vary in the:

A

Number of neutrons

28
Q

Elements in the same group have what similar properties?

A

Physical and chemical

29
Q

Rows on the periodic table are known as what?

A

Periods

30
Q

**Columns **on the periodic table are know as what?

A

Groups
(or families)

31
Q

True or False:
An element can be BOTH a molecule and a compound.

A

False

Elements can form a molecule but it cannot be a compound.

32
Q

True or False:
An element is only made up of one type of atom.

A

True

33
Q

True or False:
An element can be a molecule.

A

True

34
Q
A
35
Q

True or False:
Atoms of an element cannot decompose into smaller substances.

A

True**

36
Q

The following are examples of what?

H, O, C, Na

A

Atoms

Building blocks of matter.

37
Q

The following are examples of what?

C, O2

A

Elements

Elements are made of the same kind of atom.

38
Q

O2, NaCl, CO2

These are examples of what?

A

Molecules

Made up of 2 or more atoms joined together.

38
Q

NaCl, CO2

These are examples of what?

A

Compounds

39
Q

True or False:
All compounds are molecules but not all molecules are compounds.

A

True

Molecules of the same element are not compounds.

39
Q

Classify the following substance as either an element or a compound:
Granite

A

Neither. It’s a heterogeneous mixture.

As an igneous rock, it is composed of several minerals.

40
Q

Classify the following substance as either an element or a compound:

Air

A

Neither. It’s a heterogeneous mixture.

Air is composed of several gases: N, O, Ar, CO2, etc.

41
Q

Which of the following substances is a homegeneous mixture?

a. Granite
b. Iced tea
c. Orange juice with pulp
d. Dry ice
e. White gold

A

White gold

White gold is an alloy (can be mixed with Ni, Pd, Ag, Pt, Cu).

42
Q

Convert the following measure:

650 µL equals how many L?

A

0.000650 L

1 µL = 10-6liters

43
Q

How do you convert from Celcius to Kelvin?

A

°C + 273.15 = K

44
Q

Which of the following is the SI base unit for mass?

a. Ounce (oz)
b. Pound (lb)
c. Kilogram (kg)
d. Gram (g)

A

Kilogram (kg)

45
Q

The SI unit for density is:

A

g/cm3

46
Q

Who is credited with discovering the proton?

A

Ernest Rutherford

47
Q

Who is credited with discovering the electron by applying a potential through electrodes of an
evacuated glass tube, thus forming a stream of electrons, or cathode rays?

A

J.J. Thomson

48
Q

Who is credited with developing the Atomic Theory of Matter?

A

John Dalton

49
Q

Who is credited with calculating the charge and mass of an electron with his oil drop experiment?

A

Robert Millikan

50
Q

Who is credited with organizing the elements into what is now known as the Periodic Table?

A

Dmitri Mendeleev

51
Q

Who is credited with determining that atoms have a dense, positively charged nucleus by
performing the alpha particle scattering experiment?

A

Ernest Rutherford

52
Q

Who is credited with discovering the charge-to-mass ratio of the electron?

A

J.J. Thomson

53
Q
A
54
Q

Building blocks of matter.

A

Atoms

55
Q

Made up of atoms of the same kind.

Example: O2

A

Element

56
Q

A particle composed of 2 or more atoms joined together.

Example: O2, CO2, NaCl

A

Molecule

57
Q

Made up of 2 or more different kinds of atoms.

Example: CO2, NaCl

A

Compound

58
Q
A
58
Q
A
58
Q
A

Chemistry 113 (4 decks)

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