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Science 7th Grade > crossword > Flashcards

crossword Flashcards

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1
Q

A number indicating how compact the particles are in a substance; units are usually g/mL or g/cm3

A

density

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2
Q

located in a nucleus of an atom with the protons

A

neutrons

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3
Q

two or more elements that have been chemically combined in a fixed ratio

A

a compound

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4
Q

the variable being tested by the researcher

A

independent variable

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5
Q

rusting, tarnishing, cooking, digesting

A

chemical change

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6
Q

anything that has mass and takes up space

A

matter

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7
Q

there are 100 grams in one of these

A

kilogram

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8
Q

substances that are put together but not chemically combined the parts can be separated

A

mixture

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9
Q

tool to measure liquid volume

A

graduated cylinder

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10
Q

cutting, tearing, breaking, crushing, chopping

A

physical change

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11
Q

type of mixture where the parts can be observed

A

heterogeneous

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12
Q

central region of an atom

A

nucleus

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13
Q

tool to measure mass

A

triple beam balance

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14
Q

a researcher’s prediction of results

A

hypothesis

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15
Q

a variable that responds to the changes made by the researcher; what is measured

A

dependent variable

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16
Q

the amount of space an object occupies

A

volume

17
Q

positively charged subatomic particles

A

protons

18
Q

a pure substance that cannot be broken down into any other substances

A

an element

19
Q

the study of the properties of matter and how matter changes

A

chemistry

20
Q

smallest unit of matter

A

atom

21
Q

the type of property that tells how atoms combine

A

chemical property

22
Q

type of mixture where the parts can’t be seen

A

homogeneous

23
Q

the amount of matter contained in an object

A

mass

24
Q

the type of property that can be observed with the senses

A

physical property

25
Q

there are 100 of these in a meter

A

millimeter

26
Q

negatively charged subatomic particle

A

electron

Science 7th Grade (11 decks)

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