unit 3 test Flashcards

(19 cards)

1
Q

what are the elements

A

anpure substance that cannot be broken down into similar substinces

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2
Q

what are chemical symbols

A

lettser used to represet each element

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3
Q

what are compounds

A

a substance consiting of molucles that contain more than one kind of atom

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4
Q

what is a chemical formula

A

a group of letters and numbers that represent a molecule of a compound

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5
Q

what is a periodic table

A

a table that orginizes the chemical elemnts

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6
Q

what are physical changes

A

a change that alters the form of apperance of matter but dose not form any new substance

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7
Q

what is an aqueous soulution

A

a type of homogenous micture in witch molecules of a nother substance are uniforme mixed with water

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8
Q

what are chemical changes

A

a chnage that resultes in the formTion of one or more new substances

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9
Q

what is a solute

A

the part of a soultion dissolved by the solvent

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10
Q

what is solevent

A

the part of a soulution that desolves outher substances

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11
Q

what is a concentration

A

how much of the soulte is dissolved in a given amout of the solvent in a soulution

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12
Q
A
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12
Q

what is dilutiont

A

the decresei g of the concentration of a soulution

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13
Q

what is the rate of dissolution

A

speed at witch a solute dissoves in a solvent

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14
Q
A
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17
Q

elements