Grade 7 SCI Vocabulary 11-20

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Last updated 12:21 AM on 10/1/26
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10 Terms

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Periodic Table of elements

table that organizes elements into rows (periods) and columns ( groups).

<p>table that organizes elements into rows (periods) and columns ( groups).</p>
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Element

pure substance that cannot be broken down into simpler substances. Example: gold, silver, hydrogen, oxygen

<p>pure substance that cannot be broken down into simpler substances. Example: gold, silver, hydrogen, oxygen</p>
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Compound

made up of two or more elements. Example: hydrogen and oxygen form to make the compound water.

<p>made up of two or more elements. Example: hydrogen and oxygen form to make the compound water.</p>
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Evaporation

the process by which a liquid changes into a gas

<p>the process by which a liquid changes into a gas</p>
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Condensation

the process by which water vapor (gas) turns back into liquid water.

<p>the process by which water vapor (gas) turns back into liquid water.</p>
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Freezing

the process by which a liquid turns into solid. Happens when it goes below the freezing point. (at 32 degrees Fahrenheit water freezes)

<p>the process by which a liquid turns into solid. Happens when it goes below the freezing point. (at 32 degrees Fahrenheit water freezes)</p>
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Melting

changing from a solid to a liquid.

<p>changing from a solid to a liquid.</p>
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Mass

the amount of matter in an object or substance. This is measured in grams (g). You use a triple beam balance to measure the amount of mass an object has.

<p>the amount of matter in an object or substance. This is measured in grams (g). You use a triple beam balance to measure the amount of mass an object has.</p>
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Density

a substance's mass per unit of volume.

<p>a substance's mass per unit of volume.</p>
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Volume

the amount of space an object contains or occupies.

<p>the amount of space an object contains or occupies.</p>