memorization of first 20 elements

Question 1

H

Answer 1

hydrogen

Question 2

He

Answer 2

helium

Question 3

Li

Answer 3

lithium

Question 4

Be

Answer 4

beryllium

Question 5

B

Answer 5

boron

Question 6

C

Answer 6

carbon

Question 7

N

Answer 7

nitrogen

Question 8

O

Answer 8

oxygen

Question 9

F

Answer 9

fluorine

Question 10

Ne

Answer 10

Neon

Question 11

Na

Answer 11

sodium

Question 12

Mg

Answer 12

magnesium

Question 13

Al

Answer 13

aluminum

Question 14

Si

Answer 14

silicone

Question 15

P

Answer 15

phosphorus

Question 16

S

Answer 16

sulfur

Question 17

Cl

Answer 17

chlorine

Question 18

Ar

Answer 18

Argon

Question 19

K

Answer 19

potassium

Question 20

Ca

Answer 20

calcium

Question 21

Tera (T)

Answer 21

10^12

Question 22

giga (G)

Answer 22

10^9

Question 23

mega (M)

Answer 23

10^6

Question 24

kilo (K)

Answer 24

10^3

Question 25

deci (d)

Answer 25

10^-1

Question 26

centi (c)

Answer 26

10^-2

Question 27

milli (m)

Answer 27

10^-3

Question 28

micro (u)

Answer 28

10^-6

Question 29

nano (n)

Answer 29

10^-9

Question 30

pico (p)

Answer 30

10^-12

Question 31

femto (f)

Answer 31

10^-15

Question 32

use of molar mass to convert between mass and moles

Answer 32

mass of element (g) to amount of element (mol)(molar mass obtained from periodic table). Amount of element (mol) to number of atoms (1 mole = 6.02x10^23 atoms ).

Question 33

SI unit

Answer 33

m^3

Question 34

1 m^3

Answer 34

1000 dm^3

Question 35

1 dm^3

Answer 35

1 L

Question 36

1 L and 1 dm^3

Answer 36

1000 cm^3

Question 37

1 cm^3

Answer 37

1 mL

Question 38

density

Answer 38

mass (mL) divided by volume (cm^3)

Question 39

speed of light (c) equation

Answer 39

C = wavelength x frequency

Question 40

Compute the energy of a photon from its frequency

Answer 40

Equation for photon energy: E = h * v, h is Planck’s constant, v is frequency of light

Question 41

why only very small particles exhibit wave properties

Answer 41

wavelength = h (planck’s constant) / p (momentum).