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IScience - Chapter 7-4 and Chapter 8 Quest Flashcards

(19 cards)

1
Q

In a chemical equation, the formulas to the left of the arrow represent the ___.

A

Reactants

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2
Q

In a chemical equation, the formulas to the right of the arrow represent the ___.

A

Products

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3
Q
Which of the following is NOT a factor that affects the rate of a chemical reaction?
A) Concentration
B) Pressure
C) Surface area
D) Temperature
A

B) Pressure

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4
Q

You can speed up a reaction if you break the solid reactant up into smaller pieces. Which factor does this describe?

A

Surface area

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5
Q

When a log burns in a fire, ___.

A

New substances are formed

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6
Q

The ability of an apple to change color when exposed to air is a ___.

A

Chemical change

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7
Q
Which of the following is NOT a possible sign of a chemical change?
A) A change in state
B) A change in color
C) The release of a gas
D) The release of energy
A

A) A change in state

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8
Q

Lightning flashes contain which type of matter?

A

Plasma

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9
Q

Which unit is used for density?

A

Grams per cubic centimeters

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10
Q

Dry ice is a solid that changes directly to a gas when thermal energy is added. This is an example of ___.

A

Sublimation

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11
Q

During a hot shower, water vapor fogs up the cooler mirror when it turns to water. This is an example of ___.

A

Condensation

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12
Q

Marco put a pot of water on to boil eggs. After a few minutes, all the water was gone. This is an example of ___.

A

Vaporization

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13
Q

As long as the temperature does not change, as the volume ___ the pressure ___.

A

increases, decreases
OR
decreases, increases

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14
Q

As the space in a container gets smaller, the ___ decreases.

A

Volume

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15
Q

In Boyle’s law, what remains constant?

A

Temperature

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16
Q

Charles’s law assumes constant ___.

17
Q

Charles’s law describes the direct relationship of ___ and ___ of a gas.

A

Temperature, Volume

18
Q

The surface tension of a cup of water is caused by ___.

A

Attractive forces between water molecules

19
Q

Viscosity is a measure of a fluid’s ___.

A

Resistance to flow