7.2 Compounds Flashcards

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1
Q

What are compounds?

A

They are made up of more than one type of atom, every compound has a unique set of properties

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2
Q

How small are molecules in compounds?

A

Very small and they contain very few atoms

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3
Q

What can compound lattices form

A

Crystal lattices, in the lattices atoms bond very strong to each other

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4
Q

What’s are the main differences between a mixture of elements or compounds?

A

Molecules in a mixture are not identical

No chemical formula can be written for a mixture

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5
Q

Can solids and gasses be mixed into gasses?

A

Yes, when small solid particles are mixed with gas, it is usually referred to as smoke/dust

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6
Q

What happens when a liquid mixes with a gas?

A

It is usually referred to as fog/mist

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7
Q

Can all liquids be mixed together?

A

No some can’t

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8
Q

What is it called if something can be mixed together?

A

Miscible

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9
Q

What is it called if something can’t be mixed together?

A

Immiscible

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10
Q

An gases and solids be mixed into liquids?

A

Yes

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11
Q

Can gases remain in the liquid?

A

Yes as bubbles in foam

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12
Q

What happens when solids dissolve in liquids?

A

They form solutions

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13
Q

What happens if a solid doesn’t dissolve?

A

The particles become very small and the solid and liquid becomes a colloid

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14
Q

What happens if solid particles are bigger?

A

The mixture becomes a suspension

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15
Q

What happens in a suspension?

A

Particles will eventually fall to the bottom of the liquid

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16
Q

Does a colloid eventually separate out of the liquid?

A

No

17
Q

What is an alloy?

A

A mixture of metal with other metals or non metals

18
Q

Why are alloys important?

A

They are important because they have different and useful properties compared to pure metals