Chapter 2: Chemistry of Life

What is a water molecule made up of?

• Two hydrogen atoms and one oxygen atom

• One hydrogen atom and two oxygen atoms

• One hydrogen atom and one oxygen atom

• Three oxygen molecules

Tags

NGSS.MS-PS1-1

What bonds do water molecules form to attract other water molecules?

• Ionic bonds

• Covalent bonds

• Polar-covalent bonds

• Hydrogen bonds

What dissolves in a solvent?

• A solution

• A suspension

• A solute

• A substance

These specific forces are not as strong as covalent and ionic bonds. It is an attraction of molecules of oppositely charged regions in the atom. They are also known for being sticky and can grasp on objects, like a gecko. These forces are known as?

(a)  

Negatively charged subatomic particles are known as?

(a)  

What is the monomer of Carbohydrates?

• Monosaccharides

• Amino Acids

• Nucleic Acids

• Polysaccharides

What are examples of Carbohydrates?

• Oils

• Keratin

• Cellulose

• Deoxyribonucleic acid (DNA)

What are the monomers of Proteins?

• No true monomer

• Monosaccharides

• Amino Acids

• Nucleic Acids

Which subatomic particles have a neutral charge and a mass of 1 amu

(a)  

Explain the difference between Ionic and Covalent bonds

Answer explanation

Ionic bonds are a type of bond that is formed when one or more electrons are transferred from one atom to another, whereas Covalent bonds are a type of bond that is formed when the atoms share electrons.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-3