Atoms and Periodic Table

A neutron has a charge of

• +2

• No charge

• -1

• +1

A nucleus of an atom contains what two parts?

• Electrons and Protons

• Neutrons and Electrons

• Protons and Neutrons

Tags

NGSS.MS-PS1-1

Which type of subatomic particles have the LEAST amount of mass?

• protons

• electrons

• neutrons

• nucleus

What gives an atom mass?

• Protons & electrons in the nucleus

• electrons in the cloud

• protons & neutrons in the nucleus

• Protons & electrons in the cloud

The number of protons is equal to 

• the atomic number

• the number of neutrons

• the energy levels

• the periodic table groups

What does an atom's period tell us?

• Number of protons

• Number of electrons

• Number of valence electrons

• Number of shells

What is the atomic mass of "F"

• 9

• 18

• 17

• 19

What is the smallest unit of an element that retains the properties of that element?

• A) Molecule

• B) Atom

• C) Electron

• D) Proton

Which of the following elements is a noble gas?

• A) Oxygen

• B) Nitrogen

• C) Helium

• D) Hydrogen

What is the atomic number of an element?

• A) The number of protons in the nucleus

• B) The number of neutrons in the nucleus

• C) The number of electrons in the outer shell

• D) The number of protons and neutrons combined