Atoms,Ions, Isotopes

Two atoms of different elements will definitely have different numbers_____

• Nuclei
• Protons
• Neutrons
• Electrons

An ion forms when an atom gains or loses

• Protons
• Neutrons
• Electrons

A neutral atom would become an ion that has a charge of 2+ by 

• Losing two protons
• Losing two neutrons
• Losing two electrons

An alpha particle consists of 

• Energy only
• 1 high-energy electron
• 1 proton and 1 electron
• 2 protons and 2 neutrons

Isotopes are atoms that have different

• Mass numbers
• Element names
• Atomic Numbers

A positively charged ion is formed when

• A neutron is lost
• An electron is lost
• A neutron is gained
• An electron is gained

Two neutral atoms that have the same atomic number and different mass numbers are

• Ions
• Isotopes
• Alpha particles
• Different elements

How are Protons and Neutrons similar

• Both are in the nucleus of the atom and they both have the relative mass of 1
• They both have alpha particles and have the relative mass of 2
• They both have 1 high-energy electron and different elements

What charge does an atom have when it GAINS electrons?

• Positive

• Negative

• Neutral

What is the mass number of bromine?

• 35

• 45

• 80

• 79.904