John dalton believed that:

a. atoms are made of mostly empty space.
b. chemical changes are the result of different atomic combinations.
c. violent chemical reactions can divide atoms into smaller particles.
d. all of the above.

What problem would a person have if the nucleic acid in one of his or her cells were damaged?

When determining the shape of a molecule, it is important to draw a lewis dot structure first in order to see the total number a. electrons within the moleculeb. bonding and unshared pairs around central atomc. unshared pair within the molecule( i really need it )

Which of the following did jj thompson discover about atoms? a)an atom has an internal structure. b) atoms are tiny indivisible particles. c)electrons orbit the nucleus of an atom. d) the nucleus of an atom contains protons and neutrons.