Atomic Structure and Ions

Subatomic particles with a negative charge

• Electrons

• Neutrons

• Protons

• Quarks

Tags

NGSS.MS-PS2-3

Subatomic particles with a positive charge

• neutrons
• atomic mass
• protons
• isotopes

Find Argon on your periodic table. Which of the following is true for this element?

• 18 protons

• 40 protons

• 22 protons

• 21.9 protons

Which part of an atom is used to identify it?

• number of protons

• number of neutrons

• number of electrons

The atomic mass of an atom is equal to

• number of protons plus number of neutrons

• number of protons plus number of electrons

• number of electrons plus the number of neutrons

The nucleus of an atom is made of

• electrons and protons
• electrons and neutrons
• protons and neutrons
• empty space

Tags

NGSS.MS-PS1-1

Outside the nucleus of an atom are these

• protons
• neutrons
• quarks
• electrons

Tags

NGSS.MS-PS1-1

The mass of this particle is so small that it is not counted.

• proton
• electron
• neutron
• quark

An atom becomes _________ when it gains electrons.

• Positive
• Negative
• Neutral
• Invinsible

Elements on the LEFT side of the periodic table will most likely form:

• Positive ions
• Negative ions
• Neutral Ions
• None of these