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section 6 chapter 5 > compounds and mixtures > Flashcards

compounds and mixtures Flashcards

1
Q

what is a compound

A

a substance made of two or more elements that have been chemically combined in an exact proportion

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2
Q

who founded the law of fixed proportions

A

french chemist joseph lousie proust

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3
Q

true or false: a compounds properties ar similar to the elements that make it up

A

false

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4
Q

what shows a compounds chemical compound

A

its chemical formula

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5
Q

what is the smallest part of a compound

A

a molecule

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6
Q

molecule comes from latin for what

A

“small mass”

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7
Q

what is a molecule

A

two or more atoms that are held together by the energy in chemical bonds

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8
Q

what is covalent bonds

A

when atoms share electrons in their outermost energy level

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9
Q

what is an ionic bond

A

when ions carrying opposite charges attract to each other for neutrality

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10
Q

what is the movement of electrons called

A

conductivity

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11
Q

when do metallic bonds occur

A

when electrons move from one positively charged ion to another

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12
Q

where do hydrogen bonds occur

A

in polar molecules(positive and negative end)

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13
Q

what is a mixture composed of

A

tw or more substances that have not been chemically combines and can be physically separated

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14
Q

what is a homogenous mixture

A

one in which its components are not mixed equally

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15
Q

what is homogenous mixture

A

one in which its components are mixed equally

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16
Q

what is a solution

A

a homegenous mixture that is made of a solvent and solute

17
Q

what does soluble mean

A

being able to be dissolved

18
Q

what is the larger amount in a solution called

A

solvent

19
Q

what is the smaller amount in a solution called

A

solute

20
Q

what is solution in which there is a smaller amount of solute than solvent called

A

diluted

21
Q

what is a solution in which the amount of solute is relatively greater than the solvent called

A

concentrated

22
Q

what does it mean when a solution is saturated

A

the maximum of solute is dissolved in the solvent

23
Q

what is solubility

A

the maximum amount of solute that can be dissolved in a solvent at a given tempature

24
Q

what can solubility be increased by

A

the raising of tempature of the solvent, the crushing of the solute, and stirring vigorously

25
Q

What is the universal solvent

A

water

section 6 chapter 5 (41 decks)

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