Answer:
Blowing up a balloon involves forcing additional air particles from your lungs into the balloon. These particles hit the inside walls of the balloon creating enough air pressure to force the rubber of the balloon to expand and the balloon to inflate.
Explanation: hopes it helps :)
Density is found in everyday objects.
Answer:
a rock's appearance changing over time due to exposure to acid rain
They prob will harden over time?
Answer:
2Al(s) + 6HCl(aq)→2AlCl3(aq) + 3H2(g)
