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Tina’s Classes > Science February 23 > Flashcards

Science February 23 Flashcards

1
Q

Anything that takes up space and has mass is called what?

A

Matter

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2
Q

Characteristics of a substance that can be observed or measured WITHOUT changing the substance into something else are ___?

A

Physical Properties

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3
Q

What is the measure of gravity pulling on an object called?

A

Weight

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4
Q

The concentration of matter in an object is called?

A

Density

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5
Q

The measure of the amount of matter in an object is called?

A

Mass

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6
Q

The amount of space something takes up is called?

A

Volume

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7
Q

What is it called when two or more different kinds of matter are combined?

A

Mixture

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8
Q

The ability to be dissolved is called what?

A

Solubility

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9
Q

List examples of PHYSICAL properties

A

Colors, texture, shape, weight, electricity, density, mass, heat, volume, height, width, hardness, taste

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10
Q

Give an example of a SOLID at room temperature

A

Bookshelf

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11
Q

Give an example of a LIQUID at room temperature

A

Juice

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12
Q

Give an example of a GAS at room temperature

A

Air

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13
Q

Which has a definite shape: solids, liquids or gasses?

A

Solids

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14
Q

Which has a definite volume: Solids, liquids or gasses?

A

Solids and liquids

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15
Q

Which has particles that are packed very closely together: solids, liquids or gasses?

A

Solids

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16
Q

Which has particles that move the fastest: solids, liquids or gasses?

A

Gasses

17
Q

Particles are held rigidly in place

A

Solids

18
Q

Takes the shape of the container

A

Liquids

19
Q

Has a definite shape

A

Solid

20
Q

Particles are touching

A

Solid, liquid and gas

21
Q

Particles move really fast

A

Gasses

22
Q

Particles slide over one another

A

Liquids

23
Q

Particles are far apart

A

Gasses

24
Q

Give an example of a SOLID

A

Rock

25
Q

Give an example of a LIQUID

A

Water

26
Q

Give an example of a GAS

A

Oxygen

27
Q

Evaporation changes what:?

A

A Liquid to a Gas

28
Q

What happens when a substance freezes?

A

It loses energy

29
Q

Boiling involves the same change of state as what?

A

Evaporation

30
Q

What is sublimation?

A

When a solid goes straight to a gas

31
Q

What is the difference between a physical change and a chemical change?

A

In a physical change, nothing really happens and it stays the same. A chemical change is some thing that cannot be fixed and it does not stay the same.

32
Q

The ability of a substance to react chemically is called what?

A

Reactivity

33
Q

What are two clues that a substance is undergoing a chemical change?

A

Color change, and odor change

34
Q

The law that states that matter is neither produced nor destroyed in a physical or chemical reaction is the law of what?

A

Conservation of Matter

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