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Science > Ch 4 Finals Review > Flashcards

Ch 4 Finals Review Flashcards

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1
Q

Ch 4.1

A pure substance that cannot be separated into simpler substances by physical or chemical means is called an?

A

Element

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2
Q

Ch 4.1

A substance that contains only one type of particle is a?

A

Pure Substance

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3
Q

Ch 4.1

The amount of an element present does not affect the element’s what?

A

Properties

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4
Q

Ch 4.1

All elements can be classified as metals, metalloids, or what?

A

Non-Metals

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5
Q

Ch 4.1

An element that is shiny and that conducts heat and electric current well is a?

A

Metal

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6
Q

Ch 4.1

An element that conducts heat and electric current poorly, and can be a solid, liquid, or gas is a?

A

Non-Metal

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7
Q

Ch 4.1

Elements that have properties of both metals and no metals are called?

A

Metalloids

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8
Q

Ch 4.2

Which of the following is NOT true about compounds?

a. The mass ratio of specific compound is always the same
b. Compounds random combinations of elements
c. Different mass ratios mean different compounds

A

C

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9
Q

Ch 4.2

When two or more elements are joined by chemical bonds to form a new pure substance, we call that new substance is called a?

A

Compound

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10
Q

Ch 4.2

True or False, each compound has its own physical properties.

A

True

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11
Q

Ch 4.2

The only way to break down a compound is through a ____________ change.

A

Chemical

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12
Q

Ch 4.3

A pizza is a?

A

Mixture

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13
Q

Ch 4.3

A combination of two or more substances that are not chemically combined is a?

A

Mixture

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14
Q

Ch 4.3

When two or more materials combine chemically, they form a?

A

Compound

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15
Q

Ch 4.3

What process can you use to separate crude oil?

a. distillation
b. magnet
c. centrifuge

A

a. distillation

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16
Q

Ch 4.3

What process can you use to separate parts of blood?

a. magnet
b. centrifuge
c. filter

A

b. centrifuge

17
Q

Ch 4.3

What process do you use to separate an aluminum + iron mix?

a. magnet
b. distillation
c. filter

A

a. magnet

18
Q

Ch 4.3

What process can you use to separate a sulfur + salt mix?

a. magnet
b. centrifuge
c. filter

A

c. filter

19
Q

Ch 4.3

The process in which particles of substances separate and spread evenly through a mixture is known as?

A

Dissolving

20
Q

Ch 4.3

In a solution, the _________ is the substance that is dissolved, and the _________ is the substance in which it is dissolved.

A

Solute; solvent

21
Q

Ch 4.3

Salt is ________ in water because it dissolves in water.

A

Soluble

22
Q

Ch 4.3

When two bases or two liquids form a solution, the substance that is present in the largest amount is the ________.

A

Solvent

23
Q

Ch 4.3

A solid solution of metals or non,teals dissolved in metals is a?

A

Alloy

24
Q

Ch 4.3

What can particles in solution NOT do because they are so small?

A

They can never settle out

25
Q

Ch 4.3

The ability of a solute to dissolve in a solvent at a certain temperature and pressure is called?

A

Solubility

26
Q

Ch 4.3

True or False, particles in a suspension are soluble?

A

False

27
Q

Ch 4.3

Why are the particles in a snow globe considered a suspension?

A

Because they will eventually settle out

28
Q

Ch 4.3

What do gelatin, milk, and stick deodorant have in common?

A

They are all colloids and, particles are relatively small and fairly well mixed

29
Q

Ch 4.3

A mixture of two or more uniformly dispersed substances is called?

A

A solution

30
Q

Ch 4.3

A mixture in which particles of a material are more or less evenly dispersed throughout a liquid or gas is called?

A

A suspension

31
Q

Ch 4.3

A mixture of particles that are large enough to scatter light but are not heavy enough to settle out is called?

A

A colloid

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