Atoms are made up of three subatomic particles called protons, neutrons, and electrons.
Protons and neutrons are located in the nucleus.
All protons have a positive charge.
All neutrons have no charge or are neutral.
Electrons orbit around the nucleus and have a negative charge.
I believe it was decomposition reaction
B) just learn that you move the decimal right as numbers go higher and left if numbers decrease
So 1.75 km =1750000
Move decimal to the left to get a scientific notation
So 1.75 x 10^6
Brainliest?