Biology: Chemistry of life

What are atoms of the same element that have different numbers of neutrons?

• Isotopes

• Compounds

• Ions

• Covalent Bonds

Tags

NGSS.HS-PS1-8

What are 2 or more elements that are chemically bonded together?

• Neutrons

• Compounds

• Solutions

• Protons

What is a substance that dilutes acids or bases?

• Chemicals

• Proton

• Buffer

• Electron

This is a pure substance that consists of only one type of atom.

• Element

• Compound

• Electron

• Proton

Where are buffers found in the human body?

• In the blood

• In the saliva

• In the organs

• In the bones

Which of the following is NOT a subatomic particle?

• Proton

• Neutron

• Electron

• Element

Which of the following subatomic particles has a positive charge?

• Proton

• Electron

• Neutron

• Atom

Which of the following subatomic particles has a negative charge?

• Electron

• Element

• Proton

• Neutron

On the pH scale, which number is neutral?

• 7

• 14

• 0

• 7.4

On the pH scale, which numbers refer to bases?

• 0

• 8-14

• 1-6

• 7