Particulate Nature of Matter and Chemical Change Flashcards
1
Q
Matter
A
- Takes up space
- Has a mass
2
Q
Mixture
A
- Two or more pure substances
- Retain individual properties
3
Q
Pure substance
A
- Definite and Constant composition
4
Q
Heterogeneous
A
- Non-uniform composition
- Varying properties
5
Q
Homogeneous
A
- Uniform composition and properties
6
Q
Element
A
Atoms with same atomic no.
7
Q
Compound
A
Combination of atoms/ions in fixed ratio
8
Q
Three forms of bond
A
Metallic, Covalent, Ionic
9
Q
Atom economy
A
Trying to waste as little as possible
AE% = (M(target product)/mass of all reactants)*100%
