Matter Megan Mayer Flashcards

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0
Q

What is matter?

A

Anything that has mass or takes up space

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1
Q

What is Chemistry?

A

It’s what things are made out of, what their properties are , and how they interact and change. Chemistry is in everything you use everyday.

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2
Q

What is a element?

A

Something that cannot be separated or broken down

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3
Q

What is an atom?

A

The smallest unit of an element

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4
Q

What is compound?

A

It has two or more atoms or different elements that are combined.

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5
Q

What is a molecule?

A

The smallest unit of a substance. Atoms join together to make multiple molecules.

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6
Q

What is the chemical formula?

A

This shows how many atoms of each element are in a unit of substance.

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7
Q

What is a pure substance?

A

Matter that has a fixed composition and definite properties.

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8
Q

What is a mixture?

A

A combination of two or more substances that are not combined

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9
Q

What is a heterogeneous mixture?

A

When flour does not dissolve in water. The substances aren’t mixed uniformly and are not evenly distributed.

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10
Q

What is a homogeneous mixture?

A

When the components are evenly distributed and the mixture is the same throughout. Such as sugar in water.

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11
Q

What is a miscible?

A

Liquids that do not mix well together.

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12
Q

What is Immiscible?

A

When you can see two layers of the liquids like oil and water

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13
Q

What is melting point?

A

A temperature when a solid becomes a liquid

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14
Q

What is the boiling point?

A

Temperature when a liquid becomes a gas

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15
Q

What is density?

A

The ratio of the mass to the volume

16
Q

What is reactivity?

A

When a substance combines chemically with another

17
Q

What is flammability?

A

The ability to burn

18
Q

What is physical properties?

A

When you can observe without changing the identity of the substance

19
Q

What are chemical properties?

A

When you can observe only in situations in which the identity of the substance changes.

20
Q

What is a physical change?

A

A change of matter from one form to another without a change in chemical properties.

21
Q

What is a chemical change?

A

A change that occurs when a substance changes composition by forming one or more new substances. Changes into a interest new substance.