Elements/Atoms

Question 1

96% of life is made up of what four chemical elements?

Answer 1

Oxygen, Hydrogen, Nitrogen, Carbon

Question 2

How many elements occur Naturely?

Answer 2

94 Elements

Question 3

What example of a Trace element(0.01% of body) is essential for the body? What’s it’s function?

Answer 3

• Iron(Fe) plays an important role in transporting oxygen throughout the body through blood

Question 4

What is the atomic structure of a carbon atom? Difference between oxygen atom?

Answer 4

• Consists of 6 protons, 6 neutrons, 6 electrons in total
• 2 layered electron shell
• 4 electrons on outer shell
• Oxygen consists of 8 protons, 8 neutrons, and 8 electrons
• 2 layered electron shell
• Has 6 electrons on outer shell

Question 5

What is a valence electron?

Answer 5

• They occupy the outermost shell and determines it’s reactivity and bonding

Question 6

What is the most common molecule?

Answer 6

• Water

Question 7

What does it mean if any atomic # is less than 21?

Answer 7

• Low atomic masses

Question 8

What is the most abundant element in body?

Answer 8

• Oxygen

Question 9

What happens if Matter that contains only one type of Atom?

Answer 9

• It cannot be broken down by further chemical reactions

Question 10

What is the difference between Human/Plants if a lot of them make up same amount of elements?

Answer 10

• The combination and structure of how they are formed can greatly impact the difference

Question 11

Where are the Protons/Neutrons located in an atom?

Answer 11

• They are located in the center of nucleus

Question 12

Where are the Electrons located in Atom?

Answer 12

• Outside of the ring of atom

Question 13

Do Nuetrons/Protons have significant weight of Atomic Mass?

Answer 13

• Yes

Question 14

What element/molecule is the most electronegative?

Answer 14

• Water(H2O)

Question 15

What makes Carbon a versatile atom in BIO?

Answer 15

• It’s small/flexible structure makes it easy to bond with other Elements/atoms
• The capability of forming large number of organic compounds

Question 16

What is the difference between a structural isomer and an enantiomer?

Answer 16

• They differ in the placement of substituted groups
  Structural isomer - have same molecular formula but different in their bond connection and order
  Enantiomer - Same connectivity but different in geometry about the chiral center