chem regents review

What charge are protons?

positively charged (+).

What charge are Neutrons?

no charge.

What size and charge is electrons?

small and are negatively charged (-).

what are in an atom's nucleus?

Protons & neutrons

Where are electrons found?

in "clouds" (orbitals) around an atom's nucleus.

What is the mass number equal to?

to an atom's number of protons and neutrons added together.

What is the atomic number equal to?

to the number of protons in the nucleus of an atom.

What are the number of neutrons equal to?

mass number - atomic number

What are isotopes?

atoms with equal numbers of protons, but differ in their neutron numbers.

What are cations?

positive (+) ions and form when a neutral atom loses electrons. They are smaller than their parent atom.