Final

Question 0

Atom

Answer 0

Smallest unit of element tht keeps chemical properties

Question 1

Elements make up human body

Answer 1

Calcium, oxygen nitrogen phosphorus sodium potassium sulfur hydrogen carbon

Question 2

Molecule

Answer 2

Smallest unit tht behaves like tht substance

Question 3

Element

Answer 3

Substance tht cant be broken down to chemical means

Question 4

Compound

Answer 4

Atoms of different elements

Question 5

Pascals principle

Answer 5

If pressure is increased it will be transmitted equally throughout the substance

Question 6

Viscosity

Answer 6

Resistance to flow

Question 7

Buoyant force

Answer 7

All fluids exert an upward buoyant force on matter

Question 8

Boyles law

Answer 8

Product of pressure and volume is constant

Question 9

Charles law

Answer 9

Volume increases as temperature increases

Question 10

Gay lussacs law

Answer 10

Pressure increases as temperature increases

Question 11

Calculate pressure

Answer 11

Force/area

Question 12

Bernoullis principle

Answer 12

Pressure decreases as speed increases

Question 13

Daltons atomic theory

Answer 13

All atoms of an element r exactly alike and atoms of different elements can form compounds

Question 14

Alkali metals

Answer 14

Group 1. Li Na K Rb Cs Fr

Question 15

Mol

Answer 15

Equal to 6.022x10^23 atoms in a substance

Question 16

Difference between ionic and covalent

Answer 16

Ionic-giver and taker

Covalent- sharing

Question 17

Metals good conductors?

Answer 17

They have free electrons

Question 18

Solid ionic compounds high melting point?

Answer 18

Alot of energy is needed to break the ionic bond

Question 19

Carbon can form 4 covalent bonds?

Answer 19

4 electrons in outer shell& needs 8 to be stable

Question 20

Polymer

Answer 20

Long chains of repeating units

DNA OR RNA

Question 21

Signs of chemical or physical change

Answer 21

Chemical- precipitate formed

Physical- appearance into parts

Question 22

Atom during chemical reaction?

Answer 22

Bonds r being broken and they rearrange to form new bonds

Question 23

Exothermic

Answer 23

Releases energy by light or heat

Question 24

Endothermic

Answer 24

Absorbs energy in form of heat

Question 25

Factors speed up chemical reactions

Answer 25

Particle size,temperature, catalysts

Question 26

Enzyme

Answer 26

Biological catalysts usually a protein

Question 27

Acid and base react=?

Answer 27

Salt & water

Question 28

Reaction of base and acids

Answer 28

Neutralization producing a salt

Question 29

Examples of acids and bases

Answer 29

Acids- vinegar carbonated water lemon juice Bases- baking soda soaps

Question 30

Fusion

Answer 30

2 atoms forced together resulting in the formation of a new larger element

Question 31

Background radiation come from?

Answer 31

Cosmic rays foods inhalation of radon gas

Question 32

Radon gas is produced how?

Answer 32

Natural breakdown of uranium