Elements, Compounds, Mixtures,Molecules Flashcards
1
Q
What is an Element?
A
All the atoms are the same
2
Q
What is a Compound?
A
Contains 2 or more different elements chemically combined and in a fixed proportion (same amount of atoms)
3
Q
What happens when elements become compounds?
A
They have completely different properties than they originally had
4
Q
How do you separate compounds back to elements?
A
You need a chemical reaction
5
Q
What is a mixture?
A
Different elements or compounds not chemically combined
6
Q
How do you separate mixtures
A
Physical techniques
filtration, distillation
7
Q
What are molecules?
A
Any elements chemically joined (can be the same element) they just have more atoms
