Answer
a) Homogeneous mixture:
$\longrightarrow$ Salt soultion (Brine)
$\longrightarrow$ Sugar solution in water
$\longrightarrow$ Brass/Steel - (Any alloy)
$\longrightarrow$ Soapy water
b) Heterogeneous mixture:
$\longrightarrow$ Sand
$\longrightarrow$ A chocolate-chip cookie
$\longrightarrow$ Orange juice with pulp
$\longrightarrow$ Soup - Contains vegetables, meat, etc.
c) Compound:
$\longrightarrow$ Ferrous sulphate $(FeSO_{4}$)
$\longrightarrow$ Copper Carbonate $(CuCO_{3}$)
$\longrightarrow$ Water ($H_{2}O)$
$\longrightarrow$ Ferric oxide $(Fe_{2}O_{3})$
d) Element
$\longrightarrow$ Sodium (Na)
$\longrightarrow$ Potassium (K)
$\longrightarrow$ Lithium (Li)
$\longrightarrow$ Zinc (Zn)
e) Physical Change:
$\longrightarrow$ Melting ice cubes into water
$\longrightarrow$ Dissolving salt/sugar in water
$\longrightarrow$ Cutting paper
$\longrightarrow$ Crushing a soda can
f) Chemical Change
$\longrightarrow$ Burning paper
$\longrightarrow$ Rusting of iron
$\longrightarrow$ Neutralizing an acid with a base
$\longrightarrow$ Digesting food.
Work Step by Step
Reasons:
a) Homogeneous mixture: A mixture which has equal quantities of the substances in any part.
b) Heterogeneous mixture: A mixture which has unequal quantities in different part of the mixture.
c) A compound: A compound is a substance where two or more chemicals are present, having a chemical bond in between them.
d) Element: A substance with only and only one kind of atoms present in it.
e) Physical Change: A reversible change, which does not form any new substances.
f) Chemical change: An irreversible change, that involves formation of new substances.
