Question

which of the samples are composed of matter?
□ air inside a balloon
□ ice cubes in a glass
□ sound of a birdsong
□ heat from a car engine
□ fog in the morning

Explanation:

Matter has mass and occupies space. Air (gas), ice (solid), and fog (liquid droplets suspended in air) are all forms of matter. Sound and heat are forms of energy, not matter.

Answer:

air inside a balloon, ice cubes in a glass, fog in the morning