Deck 1: What Is Chemistry

Question 1

What is another name for a homogeneous mixture?

A) pure substance
B) compound
C) solution
D) element

Answer 1

solution

Question 2

Which of the following is a compound?

A) F₂(g)
B) O₂(g)
C) Na(s)
D) H₂O₂(l)

Answer 2

H₂O₂(l)

Question 3

What chemical symbol has been given to the element sodium?

A) S
B) K
C) Na
D) Sr

Answer 3

Na

Question 4

Which element pair is incorrect?

A) Au - gold
B) Pb - iron
C) Ag - silver
D) Hg - mercury
E) Mg - magnesium

Question 5

Which of the following may not be classified as matter?

A) tooth filling
B) sand
C) heat
D) seawater

Question 6

What is the correct statement about an atom?

A) It is always pure.
B) It is the smallest particle of an element.
C) It is the smallest particle of a molecule.
D) All atoms have protons, electrons, and neutrons.

Question 7

What is the name of the element whose symbol is "Co"?

A) carbon
B) chromium
C) coal
D) cobalt

Question 8

Which of the following represents a physical property?

A) Sodium metal is extremely reactive with chlorine gas.
B) Mercury is a shiny liquid at room temperature.
C) The tendency of aluminum to "oxidize"
D) The flammability of butane fuel.
E) The unreactive nature of argon gas

Question 9

Which of the following is a pure, elemental substance?

A) Br₂(l)
B) SO₂(g)
C) H₂O(l)
D) air

Question 10

What is the name given to the element with the symbol "P"?

A) polonium
B) protactinium
C) phosphorus
D) palladium

Question 11

What is the name given to the element with the symbol "K"?

A) kallium
B) potassium
C) phosphorus
D) krypton

Question 12

Which of the following cannot be classified as matter?

A) air
B) temperature
C) fog
D) oxygen molecule

Question 13

Which of the following is an example of a heterogeneous mixture?

A) seawater
B) steel
C) milk
D) chicken noodle soup

Question 14

Which of the following is an example of a homogeneous mixture?

A) sand
B) copper
C) air
D) sugar

Question 15

What is the name given to the element with the symbol "As"?

A) silver
B) argon
C) antimony
D) arsenic
E) astatine

Question 16

Dirt is an example of a(n) ________.

A) homogeneous mixture
B) heterogeneous mixture
C) compound
D) element

Question 17

By what chemical symbol do we know the element magnesium?

A) Mn
B) Ma
C) M
D) Mg

Question 18

By what chemical symbol do we know the element chromium?

A) Cr
B) Co
C) C
D) Cs

Question 19

Which of the following is a pure substance?

A) blood
B) block of aluminum
C) air
D) orange juice

Question 20

Which of the following can be classified as matter?

A) ice
B) sugar
C) graphite
D) All of the above are matter.

Question 21

Which of the following represents a physical change only?

A) steel turning to rust in salt air
B) liquid water freezing into ice cubes
C) milk turning "sour"
D) wood burning to form ashes

Question 22

Which term best completes this definition? An attempt to explain why a law exists is a(n) ________.

A) experiment
B) law
C) theory
D) model

Question 23

If 1 gram of ice needs a certain amount of heat to melt, the same amount of energy must be removed to convert it back to ice at its melting point.

Question 24

A compound is a pure substance made from atoms of two or more different elements.

Question 25

The term used to describe the conversion from a liquid state to a gaseous state is ________.

A) melting
B) vaporization
C) condensation
D) sublimation

Question 26

The only way one can change an element to another is via ________.

A) a chemical change
B) a physical reaction
C) a nuclear transformation
D) applying heat

Question 27

Tap water is a homogeneous mixture, while freshly distilled water is a compound.

Question 28

The chemical compounds CO and CO₂ have exactly the same properties, because both are made from carbon and oxygen.

Question 29

Which of the following represents a chemical property of a specific metal?

A) It has magnetic properties.
B) It melts at 800 °C.
C) Its density is higher than that of water.
D) When in contact with air it corrodes.

Question 30

The smallest possible piece of gold which still retains all the properties of gold is a cube shape containing eight gold atoms.

Question 31

Which of the following represents a physical change only?

A) barbecuing a steak
B) adding electricity to water to produce hydrogen and oxygen gas
C) condensing of steam
D) burning a propane camping stove

Question 32

Which of the following represents a chemical change?

A) sublimation of dry ice
B) molding solid silver
C) frying an egg
D) breaking a piece of glass

Question 33

The "disappearance" of mothballs is an example of ________.

A) melting
B) vaporization
C) condensation
D) sublimation

Question 34

Which of the following represents a chemical change?

A) sugar dissolving into hot coffee
B) ice melting to form liquid water
C) water boiling to form steam
D) steel turning to rust in salt air

Question 35

Iced tea, with sugar completely dissolved in it, is an example of a homogeneous mixture.

Question 36

Air is a homogeneous mixture of nitrogen, oxygen and hydrogen.

Question 37

Water is heterogeneous matter because it is made from twice as much hydrogen as oxygen (H₂O).

Question 38

The term used to describe the conversion from a gaseous state to a liquid state is ________.

A) melting
B) vaporization
C) condensation
D) sublimation

Question 39

The earth, taken together as a unit, may be considered one very large piece of heterogeneous matter.

Question 40

Which of the following is not a chemical property of carbon dioxide?

A) It is a critical component in photosynthesis.
B) It is used in fire extinguishers because it does not support combustion.
C) It is used to pump up bicycle tires.
D) It is reacts with water to form carbonic acid.

Question 41

A physical picture used to illustrate a theory is a model.

Question 42

Cooking vegetables with steam is a chemical process.

Question 43

Match the substances with their classification.

-Brass

A)heterogeneous mixture
B)element
C)homogeneous mixture
D)compound

Question 44

Match the substances with their classification.

-Breakfast cereal with milk

A)heterogeneous mixture
B)element
C)homogeneous mixture
D)compound

Question 45

Match the substances with their classification.

-Diamond

A)heterogeneous mixture
B)element
C)homogeneous mixture
D)compound

Question 46

When milk goes "sour," only a physical change has occurred.

Question 47

Match the substances with their classification.

-Oil-vinegar salad dressing

A)heterogeneous mixture
B)element
C)homogeneous mixture
D)compound

Question 48

It is scientifically proper to construct a theory without then doing any experiments to test it.

Question 49

Match the substances with their classification.

-Lemonade (without pulp)

A)heterogeneous mixture
B)element
C)homogeneous mixture
D)compound

Question 50

Match the substances with their classification.

-Golden nugget

A)heterogeneous mixture
B)element
C)homogeneous mixture
D)compound

Question 51

Evaporated ethanol can be isolated by cooling, without changing its disinfectant properties.

Question 52

Match the substances with their classification.

-sand and salt

A)heterogeneous mixture
B)element
C)homogeneous mixture
D)compound

Question 53

A theory summarizes facts.

Question 54

Match the substances with their classification.

-Gasoline

A)heterogeneous mixture
B)element
C)homogeneous mixture
D)compound

Question 55

Match the substances with their classification.

-Intravenous liquid

A)heterogeneous mixture
B)element
C)homogeneous mixture
D)compound

Question 56

Match the substances with their classification.

-chocolate chip cookies

A)heterogeneous mixture
B)element
C)homogeneous mixture
D)compound

Question 57

Match the substances with their classification.

-Table salt

A)heterogeneous mixture
B)element
C)homogeneous mixture
D)compound

Question 58

Match the substances with their classification.

-Distilled water

A)heterogeneous mixture
B)element
C)homogeneous mixture
D)compound

Question 59

Match the substances with their classification.

-Chlorine gas

A)heterogeneous mixture
B)element
C)homogeneous mixture
D)compound

Question 60

Match the substances with their classification.

-sugar

A)heterogeneous mixture
B)element
C)homogeneous mixture
D)compound

Question 61

Match the element with its symbol.

-Platinum

A)Po
B)Pd
C)Pt
D)K
E)Pu
F)Pa
G)P

Question 62

Match the element with its symbol.

-Nobelium

A)N
B)Ne
C)Nd
D)Ni
E)No

Question 63

Match the element with its symbol.

-Nickel

A)N
B)Ne
C)Nd
D)Ni
E)No

Question 64

Match the element with its symbol.

-Nitrogen

A)N
B)Ne
C)Nd
D)Ni
E)No

Question 65

Match the substances with their classification.

-Vitamin C

A)heterogeneous mixture
B)element
C)homogeneous mixture
D)compound

Question 66

Match the element with its symbol.

-Plutonium

A)Po
B)Pd
C)Pt
D)K
E)Pu
F)Pa
G)P

Question 67

Match the element with its symbol.

-Potassium

A)Po
B)Pd
C)Pt
D)K
E)Pu
F)Pa
G)P

Question 68

Match the element with its symbol.

-Neon

A)N
B)Ne
C)Nd
D)Ni
E)No

Question 69

Match the substances with their classification.

-mercury

A)heterogeneous mixture
B)element
C)homogeneous mixture
D)compound

Question 70

Match the event with its name of the process.

-Ice cream liquefies on a hot day.

A)vaporization
B)melting
C)condensation
D)freezing
E)sublimation

Question 71

Match the event with its name of the process.

-The block of dry ice in an ice cream parlor starts smoking once the store attendant opens the ice cream freezer.

A)vaporization
B)melting
C)condensation
D)freezing
E)sublimation

Question 72

Match the event with its name of the process.

-While heating water in a tea kettle, part of it disappears.

A)vaporization
B)melting
C)condensation
D)freezing
E)sublimation

Question 73

Match the element with its symbol.

-Palladium

A)Po
B)Pd
C)Pt
D)K
E)Pu
F)Pa
G)P

Question 74

Match the element with its symbol.

-Phosphorus

A)Po
B)Pd
C)Pt
D)K
E)Pu
F)Pa
G)P

Question 75

Match the element with its symbol.

-Polonium

A)Po
B)Pd
C)Pt
D)K
E)Pu
F)Pa
G)P

Question 76

Match the element with its symbol.

-Protactinium

A)Po
B)Pd
C)Pt
D)K
E)Pu
F)Pa
G)P

Question 77

Match the event with its name of the process.

-The pond ices in winter.

A)vaporization
B)melting
C)condensation
D)freezing
E)sublimation

Question 78

Match the event with its name of the process.

-Mothballs disappear when placed between clothes.

A)vaporization
B)melting
C)condensation
D)freezing
E)sublimation

Question 79

Match the element with its symbol.

-Neodymium

A)N
B)Ne
C)Nd
D)Ni
E)No

Question 80

Match the event with its name of the process.

-Water droplets form on the mirror of the medicine cabinet while taking a shower.

A)vaporization
B)melting
C)condensation
D)freezing
E)sublimation