Chemistry Math

Question 1

Scientific Notation

Answer 1

A way to show very large and very small numbers in a concise formate. Scientific notation expresses numbers as the product of 2 values called coefficient and the multiplyer.

Question 2

What is the formula to Convert Fahrenheit to Celsius?

Answer 2

°C = (°F - 32) × 5/9

Example: Convert 98.6°F: (98.6 - 32) × 5/9 = 37°C

Question 3

What is the formula to convert Celcius to Kelvin

Answer 3

K = °C + 273.15

Example: Convert 37°C: 37 + 273.15 = 310.15 K

Question 4

What is the quantum model?

Answer 4

The quantum model describes the probability of finding an electron in specific regions of space (orbitals) around the nucleus rather than defining fixed paths.

Question 5

Solve for DENSITY: (Explain The Steps)

Answer 5

P= m/v

1. Find the mass of the object
   Ex: Mass = 200 g Mass = 500 g
2. Find the volume of the object
   Ex: Volume = 50 mL Volume = 5 × 5 × 5 = 125 cm³
3. Use the formula: Density = Mass / Volume
   Ex: Density = 200 g / 50 mL Density = 500 g / 125 cm³
4. Solve for density
   Ex: Density = 4 g/mL Density = 4 g/cm³

Question 6

What is electron configuration?

Answer 6

Electron configuration describes the arrangement of electrons within an atom’s orbitals, where each orbital’s energy level, type (s, p, d, f) and number of electrons are specified.

Question 7

Solve using Unit Conversion: (Describe the steps)

Answer 7

1. Write down what you have Start with: 5 km Start with: 2000 mg
2. Find the conversion factor 1 km = 1000 m 1 g = 1000 mg
3. Multiply by the conversion factor 5 km × (1000 m / 1 km) 2000 mg × (1 g / 1000 mg)
4. Solve! 5 × 1000 = 5000 m 2000 ÷ 1000 = 2 g

Question 8

Yotta (Y)

Answer 8

10^24

Question 9

Zetta (Z)

Answer 9

10^21

Question 10

Exa (E)

Answer 10

10^18

Question 11

Peta (P)

Answer 11

10^15

Question 12

Tera (T)

Answer 12

10^12

Question 13

Giga (G)

Answer 13

10^9

Question 14

Mega (M)

Answer 14

10^6

Question 15

Kilo (k)

Answer 15

10^3

Question 16

Hecto (h)

Answer 16

10^2

Question 17

Deca (da)

Answer 17

10^1

Question 18

Deci (d)

Answer 18

10^-1

Question 19

Centi (c)

Answer 19

10^-2

Question 20

Milli (m)

Answer 20

10^-3

Question 21

Micro (µ)

Answer 21

10^-6

Question 22

Nano (n)

Answer 22

10^-9

Question 23

Pico (p)

Answer 23

10^-12

Question 24

Femto (f)

Answer 24

10^-15

Question 25

Atto (a)

Answer 25

10^-18

Question 26

Zepto (z)

Answer 26

10^-21

Question 27

Yacto (y)

Answer 27

10^-24

Question 28

What is this symbol - (λ)

Answer 28

wavelength - The length of one wave

Question 29

What is this symbol - (ν)

Answer 29

frequency – The number of waves per second

Question 30

Bohr Model

Answer 30

Also known as the “Planetary Model”, depicts an atom as a small, postitive nucleus, surrounded by electrons orbiting in defined circular paths or energy levels

Question 31

What is Electromagnetic Radiation?

Answer 31

EMR is a form of energy that travels as waves, comprised of oscillating electric and magnetic fields, and spans a broad spectrum from (RADIO WAVES - GAMMA RAYS)

Question 32

Frequency Equation

Answer 32

F=v/y

Question 33

Speed of light Equation

Answer 33

3x10^8 m/s

Question 34

What are the 4 Steps to complete Unit Conversions

Answer 34

1. Identify Units 2. Divide Coefficients 3.Subtract Exponents 4. Multiply the Results

Question 35

What are the main BASE UNITS used with prefixes?

Answer 35

GRAM METER LITER

Question 36

Planks Constant Formula

Answer 36

6.626 x 10^-34 J·s

Question 37

Formula Mass: Explain the steps

Answer 37

Step 1: Create your Chart write out all your elements Horozontally Step 2: Step 3: Step 4:

Question 38

Mass Formula

Answer 38

6.02 x 10^23

Question 39

What 3 terms when calculating Mass are used interchangeably?

Answer 39

1. Formula Mass 2. Molecular Mass 3. Molar Mass

Question 40

What does the "q" symbol mean?

Answer 40

Heat (the amount of energy transferred). It’s the final answer you solve for in Joules (J)

Question 41

What does the "m" symbol mean?

Answer 41

It's the Mass of the substance. You plug in the mass in grams (g)

Question 42

What does the "c" symbol mean?

Answer 42

It means the "Specific heat capacity". Always provided or known (water = 4.184 J/g°C)

Question 43

What does the "ΔT" symbol mean?

Answer 43

Delta (Greek for "change in") T is for Temperature. It's the Change in temperature. Final temp - Initial temp in °C

Question 44

What is the "Heat Equation"?

Answer 44

q=mcΔT (Hint: ΔT delta T gets delt with first) #Subtract

Question 45

What does ΔE mean?

Answer 45

Delta (Greek for "change in") E is for Energy

Question 46

What does ΔV mean?

Answer 46

Delta (Greek for "change in") V is for Volume

Question 47

What does ΔH mean?

Answer 47

Delta (Greek for "change in") H is for Enthalpy

Question 48

What are one of the 4 things you'll be asked if you need to use Avogadro's Number?

Answer 48

Number of molecules Number of atoms Number of formula units Number of particles