All Taht Gliters Flashcards
1
Q
Eg of compound
A
Water
2
Q
Eg of element
A
Copper
3
Q
Molecules and atoms
A
Molecules are A group of atoms
4
Q
Physical change
A
Changes of state eg melting or freezing
5
Q
Chemical reactions
A
When a new substance is formed eg iron sulphide + oxygen - iron oxide + sulphur dioxide
6
Q
What is a precipitation reaction
A
When something form into another thing
7
Q
What are decomposed reaction
A
Serration of a chemical compound in to an element
8
Q
A precipitation reaction
A
Sodium carbonate+copper sulphate- copper carbonate+sodium sulphate
9
Q
What is a pure substance
A
Only contains one element or compound
