Chapter 2 - Chemistry of Life

Name the 3 subatomic particles.

• proton, neutron, isotope
• proton, neutron, electron
• protein, carbohydrate, lipid, nucleic acid
• ion, isotope, isomer

What is the term for molecules that have the same composition but different structures/properties?

• ion
• isotope
• isomer
• ionic bond

If an atom has an atomic # of 20 and a mass # of 40, how many neutrons does it have?

• 10
• 20
• 30
• 40

Name the monomer that contains a phosphate group, a 5-carbon sugar, and a nitrogenous base

• monosaccharide
• triglyceride
• amino acid
• nucleotide

What is cohesion?

• attraction of one substance to itself
• attraction of one substance to another substance
• attraction of water at the surface
• high specific heat

Describe a polar water molecule. 

• Oxygen is slightly negative and 2 hydrogens are slightly positive
• Oxygen is slightly positive and the hydrogens are slightly negative
• Oxygen and 2 hydrogens are slightly negative
• Oxygen and 2 hydrogens are slightly positive

This is the bond formed due to sharing of electrons. 

• ionic
• covalent
• hydrogen
• cohesion

How is a negative ion formed? 

• An atom loses an electron
• An atom gains an electron
• An atom shares electrons
• An atom gains neutrons

What types of electrons are available for bonding?

• all electrons
• unpaired valence electrons
• those on the inner energy
• Those that have been transferred and paired

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-1

What is the pH range for acids?

• 1-6
• 7
• 8-14
• 1-14