Answer
See the explanation
Work Step by Step
a. Homogeneous mixture:
- Saltwater, where the salt is dissolved in the water
- Air, where different gases are evenly distributed
- Vodka, where alcohol and water are completely mixed
- Brass, where copper and zinc are evenly distributed at atomic level
b. Heterogeneous mixture:
- Trail mix, where different types of nuts, seeds, and dried fruits are mixed together
- Granite, where different types of minerals are visible
- Concrete, where cement, aggregate, and water are mixed together
- Oil and vinegar, where oil and vinegar are not evenly mixed
c. Compound:
Water (H2O)
Carbon dioxide (CO2)
Table salt (NaCl)
Glucose (C6H12O6)
d. Element:
Gold (Au)
Oxygen (O)
Iron (Fe)
Hydrogen (H)
e. Physical change:
Melting of ice
Boiling of water
Crushing a can
Tearing a piece of paper
f. Chemical change:
Burning of wood
Digestion of food
Photosynthesis in plants
Rusting of iron
It's worth noting that many things can be different types of mixtures, compounds or pure substances, depending on the scale of observation, and how it is defined
