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Physical Science > Chapter 2 - Intro To Matter > Flashcards

Chapter 2 - Intro To Matter Flashcards

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0
Q

What is chemistry?

A

The study of the properties of matter and how matter changes

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1
Q

What is matter?

A

Anything that has mass and takes up space

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2
Q

What is a substance?

A

A single kind of matter that is pure, meaning it always has a specific makeup-or composition-and a specific set of properties

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3
Q

What are two kinds of properties every kind of matter has?

A

Physical and chemical properties

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4
Q

What is a physical property?

A

A characteristic of a pure substance that can be observed without changing it into another substance

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5
Q

What is a chemical property?

A

Characteristic of a pure substance that describes its ability to change into different substances

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6
Q

What is an element?

A

Pure substances that can’t be broken down into other substances by chemical or physical means

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7
Q

What is an atom?

A

Basic particle from which all elements are made

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8
Q

What is a chemical bond?

A

Force of attraction between two Adams

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9
Q

What are molecules?

A

Groups of two or more atoms held together by chemical bonds

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10
Q

What is a compound?

A

pure substance made of two or more elements chemically combined in a set ratio

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11
Q

What is a chemical formula?

A

A combination of symbols that represents the elements in a compound and their proportions

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12
Q

What is a mixture?

A

Two or more substances that are combined together but not chemically combined

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13
Q

What is a heterogeneous mixture?

A

A mixture in which pure substances are unevenly distributed throughout the mixture

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14
Q

What is a homogeneous mixture?

A

A mixture in which substances are evenly distributed throughout the mixture

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15
Q

What is a solution?

A

A well mixed mixture containing a solvent and at least one solution that has the same properties throughout

16
Q

What is weight?

A

Measure of the force of gravity on a substance

17
Q

What is mass?

A

Measure of how much matter is in an object

18
Q

What is the international system of units?

A

The system of units (SI) used by scientists to measure the properties of matter

19
Q

What is volume?

A

The amount of space that matter occupies

20
Q

What is density?

A

The ratio of the mass of a substance to its volume

21
Q

What are the three types of elements?

A

Metals, non metals, and metalloids

22
Q

What are the two types of pure substances?

A

Compounds and elements

23
Q

What are the two types of mixtures?

A

Homogeneous and heterogeneous

24
Q

Compounds must have a ______ ______ by mass

A

Set ratio

25
Q

Compounds have more than one ______ that are ______ ______ together

A

Element, chemically bonded/combined

26
Q

Compounds can’t be separated by _______ means.

A

Physical

Physical Science (6 decks)

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