Relative Atomic Mass and Isotopes-Folorunsho Akihanmi

Each element is defined by the number of

• Atoms

• Isotopes

• Neutrons

• Protons

• Nuclei.

Orbiting the central region of an atom are negatively charged

• Protons

• Electrons

• Neutrons

• Nuclei

• Shells

A/an _______ has a positive charge and mass.

• Neutron

• Electron

• Proton

• Isotope

• Nucleus

The atomic mass number of a specific element is determined by the:

• number of protons in its nucleus

• number of neutrons plus protons in its nucleus

• number of neutrons plus electrons in its nucleus

• number of electrons in its outermost shell

• total number of neutrons orbiting the nucleus

5. The atomic number of an atom is based upon the number of:

• Nucleus

• Electrons

• Neutrons

• protons

• protons and neutrons

An atom contains particles which have no charge and are called:

• Protons

• Electrons

• Neutrons

• Nuclei

• Shells

The center portion of an atom is called a/an

• Electron

• bond

• nucleus

• orbital

• neutron

The atomic mass number for carbon-14 is 14, meaning that the carbon atoms have

• 14 protons

• 14 neutrons

• 6 protons and 8 neutrons

• none of these

• 8 protons and 6 neutrons

The smallest unit of matter that retains the characteristics of an element is an:

• Ion

• isotope

• atom

• electron

An atom that loses or gains electrons is called a/an

• isotope.

• proton.

• neutrino.

• neutron.

• ion.