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Chemistry S2 > Module 1 > Flashcards

Module 1 Flashcards

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1
Q

What are atoms?

A

Atoms are the smallest particles of matter and everything in the universe is made up of atoms.

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2
Q

How many different types of atoms/elements?

A

118

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3
Q

How many types of atom does an element contain?

A

1

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4
Q

What elements are man-made?

A

All elements after number 92 are man-made.

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5
Q

What are the only liquid elements?

A

Mercury & Bromine

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6
Q

What are the vertical rows/columns in the periodic table called?

A

Groups.

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7
Q

What are the horizontal rows on the periodic table called?

A

Periods.

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8
Q

What is the first letter of a periodic symbol always?

A

A capital and the second is a small letter.

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9
Q

What side of the zig-zag line are metals?

A

The left.

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10
Q

What side of the zig-zag line are non-metals?

A

The right.

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11
Q

What are metals usually?

A

Shiny and can conduct energy.

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12
Q

Can non-metals conduct energy?

A

No.

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13
Q

What is the only non-metal that can conduct energy?

A

Carbon in the form of graphite

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14
Q

What happens when two or more different elements join?

A

They form a compound

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15
Q

What happens once a compound is formed?

A

They look and behave differently from the elements they are made from.

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16
Q

How many elements in a compound that ends in -ide?

A

2 different elements.

17
Q

How do you name a compound ending in -ide?

A

The element further left is named first and the ending of the second element is changed to -ide.

18
Q

What do compounds with ending -ate or -ite contain?

A

Oxygen as well as two other elements.

19
Q

How do you know what compound has more oxygen?

A

Compounds ending in -ate = more oxygen

Compounds ending in -ite = less oxygen

20
Q

What is the most common type of physical change?

A

A change of state.

21
Q

What happens during a physical change?

A

NO new substance is formed and it is usually easy to reverse.

22
Q

What happens during a chemical change?

A

A new substance is always formed and it can be difficult to reverse.

23
Q

What are the four signs of a chemical reaction?

A

1) Bubbles are formed / gas given off
2) Change in temperature
3)Colour Change
4) Precipitate (solid) formed

24
Q

An example of a chemical change is…

A

Water forming from hydrogen and oxygen.

25
Q

An example of a physical change is…

A

Water evaporating and turning into a gas.

Chemistry S2 (3 decks)

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