Elements & Compounds Flashcards

1
Q

What is an element?

A

A substance made up of one type of atom

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2
Q

What is an atom?

A

A small particle that all things are made up of

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3
Q

What is a compound?

A

Two or more different elements chemically bonded

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4
Q

What does it mean for elements to be ‘chemically bonded’?

A

It means that you can’t separate them back into their original forms

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5
Q

What is a mixture?

A

Two or more substances not chemically bonded - can be separated

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6
Q

How do elements become chemically bonded?

A

Through a chemical reaction

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7
Q

When a metal chemically bonds with a non-metal, what is the usual ending we add to the non-metal?

A

-ide

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8
Q

What compound is made from the following: Copper and Bromine

A

Copper bromide

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9
Q

What compound is made from the following: Calcium and Oxygen

A

Calcium oxide

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10
Q

What compound is made from the following: Sulphur and Silver

A

Silver sulphide

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11
Q

What is a molecule?

A

2 or more non metal atoms chemically bonded

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12
Q

Can a molecule also be a compound?

A

Yes

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13
Q

What is the name, ratio of atoms and elements in the folowing compound? MgO

A

Magnesium oxide, 1Mg:1O, Magnesium and oxygen

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14
Q

What is the name, ratio of atoms and elements in the folowing compound? K2O

A

Potassium Oxide, 2K:1O, Potassium and oxygen

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15
Q

What is the name, ratio of atoms and elements in the folowing compound? CuBr2

A

Copper Bromide, 1Cu:2Br, Copper and bromine

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16
Q

What is the name, ratio of atoms and elements in the folowing compound? Na3N

A

Sodium Nitride, 1Na:3N, Sodium and nitrogen

17
Q

What is the name, ratio of atoms and elements in the folowing compound? FeS

A

Iron sulphide, 1Fe:1S, Iron and sulphur

18
Q

What is the name, ratio of atoms and elements in the folowing compound? CaH2

A

Calcium hydride, 1Ca:2H, Calcium and Hydrogen