Atomic Structure Re-take

What is the number of protons that the element in this image contain?

• 14
• 7
• 15
• 18

Tags

NGSS.MS-PS1-1

If an atom gains an electron it is a(n)

• Positive ion
• Negative ion
• Isotope
• Neutral Atom

Protons and neutrons are found in the nucleus of an atom. Traveling around the nucleus are fast-moving particles called electrons. Each electron has a negative electrical charge. An electron is much smaller and lighter than a proton or a neutron.

Which of the following statements are true? Select ALL that apply.

• All of an atom's electrons are located outside its nucleus.

• A proton is the same size as an electron.

• An electron has a negative electrical charge.

The _________ of an element equals the number of protons in an atom of that element

• mass number
• atomic weight
• atomic number
• isotopes

Tags

NGSS.HS-PS1-7

What element is represented in this model? Use your periodic table.

• Carbon

• Hydrogen

• Aluminum

• Lithium

Which of these is the electron?

• A
• B
• C
• D

Tags

NGSS.MS-PS1-1