*PS SOL Study Guide # 19-36 111-115

The simplest form of matter. All the atoms are the same.

• Elements

• Mixtures

• Compounds

• Solutions

Two or ore atoms that are chemically combined.

• Elements

• Compounds

• Mixtures

• Solutions

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When two or more substances combine physically and can be easily separated.

• Elements

• Compounds

• Mixtures

• Formulas

This is made of smaller particles called atoms; has mass and takes up space.

• Mass

• Matter

• Atoms

• Density

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This is the amount of matter in a given space.

• Density

• Solubility

• Combustion

• Mass

The basic building block of all matter. Each element has a unique amount of Protons.

• Atoms

• Elements

• Mixtures

• Electrons

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These subatomic particles are responsible for chemical bonds to other atoms.

• protons

• neutrons

• electrons

• quarks

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This phase of matter has the lowest amount of energy and thus, the lowest particle speed.

• solid

• liquid

• gas

• plasma

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Look at the picture of the time/temperature graph. At what points is the temperature of the water increasing.

• 1

• 2

• 3

• 4

• 5

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

At points 2 and 4, the average kinetic energy (temperature) is

• increasing

• decreasing

• staying the same

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