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K-6 SAE > SCIENCE COMP 3 > Flashcards

SCIENCE COMP 3 Flashcards

1
Q

solid matter

A

particles are very close together

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2
Q

liquid

A

particles are further apart than solid

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3
Q

gas

A

particles are very far apart, expanding infinitely

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4
Q

physical changes

A 
tearing
folding
melting
freezing
evaporating
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5
Q

chemical changes

A

rotting
burning
cooking
rusting

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6
Q

boiling

A

liquid to gas

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7
Q

condensation

A

gas to liquid

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8
Q

evaporation

A

liquid to gas

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9
Q

heterogeneous

A

u can see the different parts of a mixture like salad dressing

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10
Q

atoms

A

basic unit of chemical elements

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11
Q

electrons

A

negatively charged subatomic particles circling around an atoms nucleus

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12
Q

neutrons

A

neutrally charged subatomic particles located in the nucleus of the atom

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13
Q

protons

A

positively charged subatomic particles in the nucleus

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14
Q

molecules

A

smallest particle in a chemical element or compound

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15
Q

atomic numbers

A

represent the number of protons in the nuclei of its atoms

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16
Q

compounds

A

two or more elements bonded together all compounds are molecules, but not all molecules are compounds like H20

17
Q

ions

A

charged element or molecule that has lost or gained one or more electrons

18
Q

isotopes

A

two or more forms of the same element that have the same number of protons but diff number of neutrons

19
Q

kinetic energy

A

in motion, ball rolling

20
Q

potential energy

A

rock at top of chill, top of pendulum

21
Q

convection

A

transfer of heat by actual movement of warmed matter

22
Q

conduction

A

touch, the transfer of heat from particle to particle

23
Q

radiation

A

transfer of heat from electromagnetic waves thru space- sunlight

24
Q

conductors

A

good for electricity
wire
metal
water

25
Q

insulators

A 
bad for electricity
rubber
cloth
styrofoam
wood

K-6 SAE (19 decks)

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