7.1.1 - What happens when a bath bomb is added to water (and what causes it to happen)?

7.1.2 - Where is the gas coming from?

7.1.3 - What’s in the bath bomb that is producing the gas?

7.1.4 - Which combinations of the substances in a bath bomb produce gas?

7.1.5 - What gas(es) could be coming from the bath bomb?

7.1.6 - How can we explain another phenomenon where gas bubbles appear from combining different substances?

7.1.8 - How can particles of a new substance be formed out of particles of an old substance?

7.1.9 - Does heating liquid water produce a new substance in the gas bubbles that appear?

7.1.10 - When energy from a battery was added to water, were the gases produced made of the same particles as were produced when heating the water?

7.1.12 - How can a new substance (a gas) be produced and the total mass of the closed system not change?

7.1.13 - How can we make something new that was not there before?