YL Bio Basic Chemistry Review

What are the building blocks of all matter in the universe?

• Atoms
• Electrons
• Cells
• Nucleic Acids

What type of bond shares electrons?

• Ionic
• Covalent
• Hydrogen

What type of bond transfers electrons?

• Ionic
• Covalent
• Hydrogen

The atomic mass of an atom represents

• the protons the atom contains

• the neutrons the atom contains

• the protons + neutrons the atom contains

• the protons + electrons the atom contains

Lemon juice has a pH value of 2.0. pH of 2.0 is considered

• strong acid

• strong base

• weak acid

• weak base

Which pH would be a weak base ?

• 8.5

• 12.5

• 3.0

• 7.0

The charge of a proton is _____________

• Positive
• Negative
• Neutral 

The charge of a neutron is ________________

• Positive
• Negative
• Neutral

The charge of an electron is ________________

• Positive
• Negative
• Neutral

Tags

NGSS.HS-PS2-5

What two parts of an atom make up the atomic mass?

• Protons and electrons
• Protons and neutrons
• Neutrons and electrons
• Only protons