warm up questions .3

Question 1

what are four key atoms?

Answer 1

carbon
oxygen
hydrogen
nitrogen

Question 2

what are three major chemical bonds?

Answer 2

ionic bond
polar covalent bond
metallic bond

Question 3

What is electronegativity?

Answer 3

an element tends to gain electrons and form negative ions in chemical reactions

Question 4

How does electronegativity affect covalent bonds?

Answer 4

the more equal the sharing in between the atoms, the stronger the bond formed.

Question 5

When do electrons have a low level of potential energy?

Answer 5

low potential energy when at a location associated with a more positive potential.

Question 6

What is an organic compound?

Answer 6

any of large class of chemical compounds in which one or more atoms of carbon are covalently linked to atoms of other elements, commonly hydrogen, oxygen or nitrogen

Question 7

What happens to a macromolecule in a dehydration reaction?

Answer 7

formation of new bonds, requiring energy

Question 8

What happens to a macromolecule in a hydrolysis reaction?

Answer 8

the molecule is split

Question 9

What are the four categories of organic macromolecules?

Answer 9

Proteins- (polymers of amino acids)
Carbohydrates -(polymers of sugars)
Lipids- (polymers of lipid monomers)
Nucleic acids- (DNA and RNA; polymers of nucleotides)