Elements, Compounds and Mixtures Flashcards
1
Q
What are elements?
A
Elements are made of only one type of atom. Each element has its own symbol.
2
Q
What are compounds?
A
- compounds contain more than one type of atom
- they are formed from elements by chemical reactions
- which always involve the formation of one or more new substance, often involving an energy change.
3
Q
What is a mixture?
A
A material made up of two or more different chemical substances which are not chemically bonded.
4
Q
An example of an element
A
Oxygen = O
Carbon = C
5
Q
An example of a compund
A
CO2
6
Q
An example of a mixture
A
Seawater
