Formulae And Equations Flashcards
1
Q
Define Element
A
An element is a substance that cannot be split into simpler substances
2
Q
Define Atom
A
An atom is the smallest part of an element that can take part in chemical reactions
3
Q
Define Molecule
A
A molecule is two or more atoms chemically joined together.
4
Q
Define Compound
A
A substance that consists of atoms of different elements chemically joined together.
5
Q
What does a mixture contain?
A
A mixture contains different elements or compounds but they are not chemically joined.
6
Q
What happens to the atoms in the reactants in a chemical reaction?
A
They are re-arranged to make different products.
7
Q
What is Calcium Hydroxide’s chemical formulae?
A
Ca(OH)2
