Chapter 1 Flashcards

1
Q

Submicroscopic particles that constitute the fundamental building blocks of ordinary matter.

A

Atom

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2
Q

Two of more atoms that are chemically bonded

A

Molecule

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3
Q

The science that seeks to understand the behavior of matter by studying the behavior of atoms and molecules.

A

Chemistry

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4
Q

A tentative interpretation or explanation of the observations.

A

Hypothesis

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5
Q

Highly controlled procedures designed to generate observations that may confirm or refute a hypothesis.

A

Experiment

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6
Q

A brief statement of equation that summarizes past observations and predicts future ones.

A

Scientific Law

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7
Q

A law stating that matter is neither created nor destroyed in a chemical reaction.

A

Law of conservation of mass

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8
Q

A proposed explanation for observations and laws based on well established and tested hypothesis that presents a model of a way nature works and predicts behavior beyond the observations and laws on which it was based.

A

Theory

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9
Q

The theory that each element is composed of tiny indestructible particles called atoms, that all atoms of a given element have the same mass and other properties, and that atoms combine in simple, whole-number ratios to form compounds.

A

Atomic Theory

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10
Q

Anything that occupies space and has mass.

A

Matter

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11
Q

Mass’ physical form

A

State

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12
Q

Basic components that make up mass

A

Composition

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13
Q

Atoms or molecules that are packed close to each other in fixed locations

A

Solid

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14
Q

Atoms of molecules are in patterns with long range and repeating order.

A

Crystalline

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15
Q

Atoms or molecules do not have any long range order.

A

Amorphous

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16
Q

Atoms or molecules packed as closely as they are in a solid matter, but they are free to move relative to each other.

A

Liquid

17
Q

Atoms of molecules have a lot of space between them and are free to move relative to each other; compressible.

A

Gas

18
Q

Made up of only one component and its composition is invariant (does not vary from one sample to another).

A

Pure Substance

19
Q

Is composed of two or more components in proportions that can vary from one sample to another.
Ex: sweet tea

A

Mixture

20
Q

A substance that cannot be chemically broken down into simpler substances.

A

Element

21
Q

A substance composed of two or more elements in a fixed, definite proportion.

A

Compound

22
Q

Composition varies from one region of the mixture to another.

A

Heterogeneous Mixture

23
Q

Composition that remains the same throughout.

A

Homogeneous Mixture

24
Q

Changes that alter only state or appearance, but not composition.

A

Physical Changes

25
Q

Changes that alter the composition of matter.

A

Chemical Changes

26
Q

A property that a substance displays without changing its composition.

A

Physical Property

27
Q

A property that a substance displays only by changing its composition via a chemical change.

A

Chemical Property

28
Q

The capacity to do work.

A

Energy

29
Q

The action of a force through a distance.

A

Work

30
Q

The energy associated with motion of an object.

A

Kinetic Energy

31
Q

The energy associated with the position or composition of an object.

A

Potential Energy

32
Q

The energy associated with the temperature of an object.

A

Thermal Energy

33
Q

The idea that energy is neither created nor destroyed.

A

Law of Conservation of Energy

34
Q

Measure of space

A

Volume

35
Q

The measure of a quantity of matter within an object.

A

Mass

36
Q

A property such as density that is independent of the amount of a given substance.

A

Intensive Property

37
Q

A property that depends on the amount of a given substance, such as mass.

A

Extensive Property