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Chemistry In the Comminity > Mid term Exam > Flashcards

Mid term Exam Flashcards

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1
Q

What is the study of substances and the changes they undergo?

a. Zoology
b. Biology
c. Chemistry

A

c. Chemistry

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2
Q

What is the Chemistry that studies all substances WITHOUT carbon?

a. Organic
b. Inorganic
c. Biochemistry

A

b. inorganic

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3
Q

What is a means of testing a hypothesis?

a. experiment
b. scientific law
c. data collection

A

a. experiment

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4
Q

What is matter that flows and has a definite volume but NOT a definite shape?

a. Solid
b. Liquid
c. gas

A

b. liquid

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5
Q

What are the building blocks of elements?

a. atoms
b. ions
c. formula units

A

a. atoms

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6
Q

What is the matter with a definite shape and a definite volume?

a. solid
b. liquid
c. gas

A

a. solid

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7
Q

What type of matter does NOT have a definite shape or volume?

a. solid
b. liquid
c. gas

A

c. gas

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8
Q

What kind of mixture looks the same throughout?

a. homogeneous
b. heterogeneous
c. liquid

A

a. homogeneous

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9
Q

What is another name for a homogeneous mixture?

a. compound
b. element
c. solution

A

c. solution

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10
Q

What is the term for an atom that has lost or gained an electron?

a. cation
b. anion
c. ion

A

c. ion

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11
Q

What is the name for a negatively charged ion?

a. electron
b. cation
c. anion

A

c. anion

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12
Q

What is the name for a Positively charged ion?

a. anion
b. cation
c. positron

A

b. cation

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13
Q

Electrons orbit a dense, positively charged center called?

a. central point
b. proton
c. nucleus

A

c. nucleus

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14
Q

What is the name of the scientist who discovered the positively charged nucleus?

a. Dalton
b. Rutherford
c. Bohr

A

b. Rutherford

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15
Q

What are spheres that have no charge and are located in the nucleus?

a. protons
b. electrons
c. neutrons

A

c. neutrons

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16
Q

What are atoms of the same element but with different numbers of neutrons?

a. reactants
b. isotopes
c. valence electrons

A

b. isotopes

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17
Q

What are long chains of Carbon and Hydrogen bonded together called?

a. hydrocarbons
b. polymers
c. carbogens

A

a. hydrocarbons

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18
Q

What is another name for a line spectrum?

a. continuous spectrum
b. atomic emission spectrum

A

b. atomic emission spectrum

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19
Q

What is the name of the spectrum which allows you to see all the colors, and they BLEND into each other?

a. continuous spectrum
b. line spectrum
c. electromagnetic spectrum

A

a. continuous spectrum

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20
Q

What do we call the colors you can see?

a. infrared
b. visible light
c. radar

A

b. visible light

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21
Q

What is the name for the device used to separate the light into separate wavelengths?

a. Geiger counter
b. Diffraction Grating
c. Film Badge

A

b. Diffraction Grating

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22
Q

What is Distance from the origin of the wave to the top of it?

a. wavelength
b. amplitude
c. origin

A

b. amplitude

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23
Q

What is the term fro an amount of waves that pass a specific point in a certain amount of time?

a. frequency
b. crest
c. trough

A

a. frequency

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24
Q

What is the lowest point on a wave called?

a. Amplitude
b. trough
c. crest

A

b. trough

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25
Q

What is the name of the place where the wave starts?

a. origin
b. destination
c. amplitude

A

a. origin

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26
Q

What are waves used in cooking your food?

a. radio
b. microwaves
c. ultra violet

A

b. microwaves

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27
Q

What are the waves that are used to take pictures of your bones?

a. x-rays
b. gamma
c. radar

A

a. x-rays

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28
Q

What is the type of radiation that is made of fast moving electrons with a negative charge?

a. alpha
b. beta
c. gamma

A

b. beta

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29
Q

What is the smallest and strongest type of radiation which can only be stopped by lead?

a. alpha
b. beta
c. gamma

A

c. gamma

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30
Q

What is a relatively constant level of radiation known as?

a. Background radiation
b. REM
c. gray

A

a. background radiation

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31
Q

When an unstable nucleus loses energy by emitting radiation what do we call this process?

a. nuclear waste
b. radioactive decay
c. mutations

A

b. radioactive decay

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32
Q

What are changes in the structure of DNA that may result in production of altered proteins?

a. Fission
b. cancer
c. mutation

A

c. mutation

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33
Q

What type of radiation has a positive charge and is the largest?

a. alpha
b. beta
c. gamma

A

a. alpha

34
Q

What type of cancer affects the white blood cells and is caused by exposure to high amounts of ionization energy?

a. Leukemia
b. Breast Cancer
c. Thyroid Cancer

A

a. Leukemia

35
Q

When the nucleus of an isotope is bombarded by neutrons splitting the nucleus into smaller fragments is known as?

a. fusion
b. fission

A

b. fission

36
Q

In nuclear chemistry what are used to slow down neutrons so they can be captured by the reactor fuel to continue the chain reaction?

a. water
b. control rods
c. steam

A

b. control rods

37
Q

What is the place where all known elements are located?

a. periodic table
b. index
c. earth’s core

A

a. periodic table

38
Q

What are the vertical columns of the periodic table called?

a. group
b. periods
c. law

A

a. groups

39
Q

What is the name for elements with a full valance shell?

a. Halogens
b. Noble gases
c. Earth metals

A

b. Noble gases

40
Q

What is the name for the horizontal rows of the periodic table?

a. rows
b. groups
c. periods

A

c. periods

41
Q

What is the term for a group of atoms that act as one and carries a charge?

a. halogens
b. polyatomic ion
c. metals

A

b. polyatomic ion

42
Q

What is a combination of 2 or more chemicals that cannot be broken down by physical means?

a. compound
b. solution
c. mixture

A

a. compound

43
Q

What are the forces that hold a molecule together called?

a. inter molecular forces
b. ionic bonds
c. covalent bonds

A

a. inter molecular forces

44
Q

What is a liquid’s resistance to flow?

a. resistance measure
b. viscosity

A

b. viscostiy

45
Q

What is the average mass of all the isotopes of that particular element known as?

a. atomic mass
b. atomic weight
c. atomic number

A

b. atomic weight

46
Q

What is the process that separates ores based on the different boiling points?

a. combustion
b. fusion
c. fractional distillation

A

c. fractional distillation

47
Q

What is the name for the bond where electrons are transferred to another atom?

a. ionic
b. covalent
c. hydrogen

A

a. ionic

48
Q

Elements that have properties of both metals and nonmetals are known as?

a. mixtures
b. transition metals
c. metalloids

A

c. metalloids

49
Q

A space where no particles of matter exist is called:

a. vacuum
b. diffraction grating
c. cathode ray

A

a. vacuum

50
Q

When a liquid changes to a gas below its boiling point is known as:

a. respiration
b. condensation
c. evaporation

A

c. evaporation

51
Q

HCFC, carbon diozide, water vapor, CFC and methane are examples of

a. ozone
b. acid rain
c. green house gases

A

c. green house gases

52
Q

The layer of the atmosphere where we live - 6 miles up and where weather takes place?

a. Mesosphere
b. Stratosphere
c. Trophosphere

A

c. Trophosphere

53
Q

When light strikes an object and it reflects it back without heating up is known as?

a. reflectivity
b. heat capacity
c. outwar flow

A

a. reflectivity

54
Q

Which of these examples is a physical change?

a. freezing and melting
b. boiling and condensing
c. Both a and b

A

c. both a and b

55
Q

A chemical change occurs when a piece of wood?

a. splits
b. is painted
c. decays

A

c. decays

56
Q

What is the chemical symbol for sodium?

a. S
b. Na
c. SO

A

b. Na

57
Q

if you had to separate a mixture of alcohol and water you would?

a. use a filter
b. set it on fire
c. use distillation

A

c. use distillation

58
Q

Which of the following is an example of a chemical change?

a. slicing cheese
b. rotting meat
c. freezing water

A

b. rotting meat

59
Q

Which of the following is a compound?

a. water
b. oxygen
c. carbon

A

a. water

60
Q

Which of the following is different in isotopes of the same atom?

a. protons
b. Neutrons
c. Electrons

A

b. Neutrons

61
Q

White light produces what type of spectrum?

a. rainbows
b. continuous spectrum
c. line spectrum

A

b. continuous spectrum

62
Q

The distance between the crest of one wave to the crest on the next is called?

a. trough
b. wavelength
c. origin

A

b. wavelength

63
Q

The lowest point on a wave is called ?

a. trough
b. crest
c. wavelength

A

a. trough

64
Q

Line spectra are produced when you look at what type of light?

a. neon light
b. white light
c. Black light

A

a. neon light

65
Q

How many electrons do the third shell holds?

a. 4
b. 6
c. 8

A

c. 8

66
Q

What kind of process is evaporation?

a. Heating
b. cooling
c. Fast

A

b. Cooling

67
Q

The average temperature of the earth will ______ if we did not have green house gases?

a. increase
b. decrease

A

b. decrease

68
Q

Photosynthesis and respiration are:

a. same
b. opposite
c. create oxygen

A

b. opposites

69
Q

Petroleum is mostly used for:

a. building
b. explosives
c. burning

A

c. burning

70
Q

How are the compounds of petroleum separated by fractional distillation?

a. Mass
b. boiling point
c. color

A

b. boiling point

71
Q

The compounds with the _____ boiling points go to the top of the distillation tower.

a. lowest
b. Highest

A

a. lowest

72
Q

What is the substance called that does not boil?

a. gas
b. bottoms
c. kerosene

A

b. bottoms

73
Q

Fractions of the distillation process are used for the following except.

a. paper
b. heating fuel
c. plastics

A

a. paper

74
Q

The higher the boiling point the intermolecular force between atoms are

a. lower
b. higher
c. zero

A

b. higher

75
Q

A substance with a high viscosity will flow?

a. fast
b. slow
c. same

A

b. slow

76
Q

How many electrons are in the first shell?

a. 2
b. 4
c. 8

A

a. 2

77
Q

How many electrons are in the second shell?

a. 2
b. 4
c. 8

A

c. 8

78
Q

A substance with a low viscosity will flow

a. fast
b. slow
c. same

A

a. fast

79
Q

Which of the following is NOT a green house gas?

a. water vapor
b. Methane
c. Oxygen

A

c. Oxygen

80
Q

Know the 4 signs that a chemical reaction my have occurred?

A
  1. forms precipitate
  2. forms bubbles
  3. changes color
  4. changes temperature
81
Q

Draw and label the layers of the atmosphere

A

See Mrs. Krumpelman for help

82
Q

Draw the electron Dot configuration for 4 elements

A

See Mrs. Krumpelman for help

Chemistry In the Comminity (14 decks)

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