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Flashcards in chemistry Deck (12)
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1

How can you obtain drinking water from muddy water?

Filtrate then distil

2

How can you separate petrol from crude oil

fractional distillation

3

3 types of bonds

Ionic, covalent, metallic

4

What do atoms never do?

gain or lose protons

5

Type of elements that generally form negative ions

non-metals

6

Type of elements that generally form positive ions

metals

7

What does empirical mean?

The simplest

8

Methane chemical formula

CH4

9

Why does chlorine have two molecules?

Because Chlorine is a non-metal and they are mostly molecular.

10

Sulfuric acid formula

H2SO4

11

Why is a carbonate atom 2-?

Because it contains a carbon atom and three oxygen atoms

12

The law of conservation of mass

Mass can not be created or destroyed, can only turn from one form to the other.