Chapter 4

Question 0

CHNOPS

Answer 0

Carbon
Hydrogen
Nitrogen
Oxygen
Phosphorus
Sulfur

Question 1

6 primary elements essential to life

Make up macromolecules

Answer 1

CHNOPS

Question 2

Atom

Answer 2

Smallest particle of an element

Question 3

Element

Answer 3

Pure substance that can’t be broken down into other substances by any means

Question 4

Compound

Answer 4

Substance containing two or more elements chemically combined in a fixed ratio

Question 5

Covalent bond

Answer 5

Chemical bond that forms when two atoms share electrons

Question 6

Ionic bond

Answer 6

Chemical bond that occurs when an atom transfers an electron to another atom

Question 7

Ion

Answer 7

Atom that has become electrically charged as a result if gaining or losing an electron

Question 8

Chemical reaction

Answer 8

Breaking of old and formation of new chemical bonds that result in new substances.

Question 9

Reactant

Answer 9

Starting material for a chemical reaction

Question 11

Product

Answer 11

Material created as a result if a chemical reaction.

Question 12

Polar molecule

Answer 12

Molecule in which opposite needs have opposite electric charges

Question 13

Hydrogen bond

Answer 13

Bond created by the weak attraction of a slightly positive hydrogen atom to a slightly negative portion if another molecule

Question 14

bond

Answer 14

process of transferring or sharing electrons to create attraction- holds atoms together

Question 15

3 subatomic particles

Answer 15

proton
electron
neutron

Question 16

proton

Answer 16

positive charge

in the nucleus

Question 17

electron

Answer 17

negative charge

in the rings outside the nucleus

Question 18

nuetron

Answer 18

neutral charge

in the nucleus

Question 19

losing an electron

Answer 19

becomes more positively charged

Question 20

gaining an electron

Answer 20

become more negatively charged

Question 21

structure of water

Answer 21

2 hydrogen-1 oxygen
oxygen has a stronger pull
hydrogen +
oxygen -