Elements
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What is an element?
An element is a substance that is made up from only one type of atom.
What are the 4 groups on the periodic table?
• Alkali metals ● Transition metals ● Halogens ● Noble gases
Are noble gases reactive?
NO
Are halogens reactive?
VERY, YES
Alkali metals are group 1 of the periodic table, are they reactive?
YES, they need to be stored in oil.
Are halogens toxic?
YES
Can elements that aren’t metal conduct electricity?
NO
What are compounds?
Compounds are formed when atoms of different elements join together.
What is a molecule?
A molecule is a group of atoms joined together.
When will a compound end in -ide?
If it contains 2 elements
When will a compound end in -ite or -ate?
If it contains 3 elements, once which is oxygen.
What does Electrolysis mean?
(meaning splitting using electricity).
What does a question means when it refers to elements in a group?
Their group number? Alkali- 1 Noble Gas - 8/0 Halogens -7 Transition metals- middle section