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Science > Unit 1 Final > Flashcards

Unit 1 Final Flashcards

1
Q

What happens when we zoom closer and closer into the specimen using a microscope?

A

We see more detail

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2
Q

Atom

A

Building blocks of all matter, smallest unit of an element

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3
Q

Molecule

A

Formed when atoms bond together

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4
Q

Element

A

A specific type of atom

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5
Q

Matter

A

Anything that is mass and takes up space

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6
Q

How to identify atoms and molecules?

A

An atom only has one element and a molecule has more than one atom

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7
Q

What gases make up the atmosphere?

A

Nitrogen, oxygen, argon, and trace gases

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8
Q

What are 6 examples of air pollution?

A

Ozone o3, carbon monoxide and nitrogen dioxide, sulfur dioxide, and lead PB

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9
Q

What are causes of air pollution?

A

Gasoline from cars, powerplants, burning fossil fuels, and industry

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10
Q

What are the characteristics of a solid?

A

Molecules vibrate/they have a definite shape and a definite volume

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11
Q

What is a characteristic of a liquid?

A

Molecules move freely, but not too freely/ they have no definite shape, but a definite volume

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12
Q

What is the characteristic of a gas?

A

The molecules move in random motion/have no definite shape or volume

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13
Q

What is density?

A

How packed molecules are in matter

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14
Q

List the states of matter in order from least dense to most dense:

A

Gas, liquid, and solid

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15
Q

How does heat affects states of matter and density?

A

It affects it by heat making the molecules move faster. The faster, the molecules move, less dense becomes.

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16
Q

What are the phase changes of water?

A

Solid to liquid is melting
Liquid to solid is freezing
Liquid to gas is evaporation
Gas to liquid is condensation
Gas to solid is deposition
Solid to gas simulation

17
Q

What is independent variable?

A

The variable that is manipulated in an experiment; the factor that the experimenter changes

18
Q

What is the dependent variable?

A

The variable that is affected in an experiment; the variable that will change as a result of the independent variable

19
Q

What are the controls/constants?

A

Factors that stay the same between the different groups of an experiment

20
Q

What is heat?

A

A measurement of energy

21
Q

What is Temperature?

A

Measure of the average heat or thermal energy of the molecules in a substance

22
Q

What is an insulator?

A

Materials that transfer heat slowly

23
Q

What is a conductor?

A

Material that transfers heat quickly 

Science (37 decks)

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