chapter 2 review

Question 1

What is chemistry and why are we concerned with it in an anatomy class?

Answer 1

Chemistry is the first step in the study of anatomy, it is the makeup & characteristics of all chemical reactions

Question 2

What is matter?

Answer 2

anything that takes up space

Question 3

Why do we weigh less on the moon?

Answer 3

because of gravity

Question 4

What are elements?

Answer 4

the simplest matter

Question 5

How much of the body is made-up of elements?

Answer 5

account more then 99% of atoms inside you

Question 6

what are atoms made of?

Answer 6

protons, neutrons, electrons

Question 7

what is the atomic number?

Answer 7

amount of protons

Question 8

what is the atomic weight?

Answer 8

amount of protons plus neutrons

Question 9

what is a covalent bond?

Answer 9

forms when atoms share electrons

Question 10

what is an ionic bond?

Answer 10

gain, lose, or share electrons

Question 11

what makes stable elements the way they are?

Answer 11

there is enough binding energy to hold the nucleus together

Question 12

How are isotopes used in medicine?

Answer 12

treat health conditions

Question 13

What are isotopes?

Answer 13

atoms that have the same number of protons and electrons but different numbers of neutrons and therefore have different physical properties

Question 14

what are hydrogen bonds?

Answer 14

attraction between atoms (single bonds)

Question 15

what are molecules?

Answer 15

two or more atoms bonded together

Question 16

what are compounds?

Answer 16

atoms of different elements bond

Question 17

what is the molecular formula?

Answer 17

the #’s and types of atoms

Question 18

what is the structural formula?

Answer 18

the structures of atoms

Question 19

what are the types of rxns?

Answer 19

Synthesis, decomposition, and exchange

Question 20

what is synthesis?

Answer 20

2 or more atoms join together

Question 21

what is decomposition?

Answer 21

larger molecules broken into smaller parts

Question 22

what is exchange?

Answer 22

occurs as parts of molecules trade places

Question 23

what is a reversible rxn?

Answer 23

products changed into original reactants

Question 24

what is an acid?

Answer 24

hydrogen ions released in H2O

Question 25

what is a base?

Answer 25

ions released that combine with hydrogen ions in water

Question 26

how does the pH scale work 0-14?

Answer 26

3 is acidic
7 is normal
12 is basic

Question 27

what does it mean when an atom is organic?

Answer 27

atoms that contain hydrogen and carbon

Question 28

what does is mean when an atom is inorganic?

Answer 28

atoms that don’t have both hydrogen and carbon