A and P chapter 2

Question 1

What is chemistry?

Answer 1

Study of matter

Question 2

What is biochemistry?

Answer 2

Chemistry of organisms

Question 2

Why is a knowledge of chemistry essential to understanding physiology?

Question 3

What is matter?

Answer 3

Anything that occupies space and has mass (weight)

Question 4

What are elements?

Answer 4

Is a substance that cannot be broken down to other substances (substance of one or more atoms)

Question 5

What is the relationship between matter and elements?

Answer 5

All matter is made up of elements

Question 6

What elements are most common in the human body?

Answer 6

CHON (carbon, hydrogen, oxygen, nitrogen)

Question 7

What are trace elements?

Answer 7

Essential elements but are only needed in minute quantities.

Question 8

What kind of a charge does a proton have?

Answer 8

Positive

Question 9

What kind of a charge does a neutron have?

Answer 9

Neutral

Question 10

What kind of charge does a electron have?

Answer 10

Negative

Question 11

Where is a proton located within an atom?

Answer 11

Found within the nucleus.

Question 12

Where is a neutron located within an atom?

Answer 12

Found within the nucleus.

Question 13

Where is an electron located within an atom?

Answer 13

Located on the electron shell, is in constant motion around the nucleus.

Question 14

What gives us the atomic number?

Answer 14

Number of protons

Question 15

What is an isotope?

Answer 15

An atom of the same element that have a different number of neutrons.(different atomic masses)

Question 15

What gives us the atomic weight?

Answer 15

Number of protons + number of neutrons

Question 16

What determines whether atoms will form chemical bonds?

Answer 16

The number and arrangement of their electrons.

Question 17

What is an ion?

Answer 17

It is a charged particle formed through ionic bonds.