Chp.1
What is Chemistry
Chemistry is the study of how matter behaves by studying what atoms and molecules do.
What are the 2 parts of scientific notation
Decimal part- number between 1 and 10
Exponential part- 10 raised to the nth power
Which is a chemical change
A. Boiling
B. Melting
C. Sublimation
D. Buring
D.
What are the 3 types of subatomic particles
And what are their rules and places in the atom
Protons- the type of element the atom is, it is in the nucleus
Electrons- how stable the atom is, it is outside the nucleus
Neutrons- the mass of the atom, it is also in the nucleus
What is the difference between Empirical and Molecular
Molecular formulas show the actual number of atoms while Empirical show the ratio
What is an observation
measuring or observing some aspect of nature
What are the rules for sig figs
All nonzero numbers are significant
Zeros in between nonzero digits are significant
Zeros behind a nonzero number and a decimal are significant
Zeros in between a nonzero number and a decimal are significant
Zeros before or to the left of a decimal without a nonzero in front are insignificant
Zeros in front of an implied decimal are ambiguous
What is the formula for SHC and what unit does it end with
q=mCΔ T
It ends in Joules
What is the symbol for mercury I
Hg2+2
How do you name Ionic formulas
Metal name(roman numeral if needed) + Base of nonmetal+ide there are no polyatomic
Metal name(roman numeral if needed) + polyatomic name
What is law
A law is a result of a large number of observations.
What are the rules for doing math with sig figs
For multiplication and division, you take the fewest sig figs
For addition and subtraction, you take the fewest decimal places
Identify whether the following are pure substances or mixtures:
Mixture- Saltwater, Air, Kool-aid, Lemonade, Brass
Pure-Gold, Table sugar, Diamond, Distilled
What does each corner represent on an element
The upper left is the mass
The lower left is the atomic number
The upper right is the charge or superscript
The lower right is the subscript or the number of atoms of that element(s)
prefix(if not one)+ first nonmetal +prefix + base of nonmetal+ide
What is a theory
Give an example of it
A theory is model
Big bang theory
Do you know your prefix multipliers
Name them and that's how many points you get
Tera - 10 to the power of 12
Giga- 10 to the power of 9
Mega- 10 to the power of 6
kilo- 10 to the power of 3
hecto- 10 to the power of 2
deca- 10 to the power of 1
deci- 10 to the power of -1
centi- 10 to the power of -2
milli- 10 to the power of -3
micro- 10 to the power of -6
nano- 10 to the power of -9
pico- 10 to the power of -12
femto- 10 to the power of -15
What are the 3 units of energy and their conversions
Bonus 200 for naming the 4th unit
Joules(J), calories(cal), nutritional Calories(Cal)
1 cal = 4.184J
1 Cal = 1000 cal
1 Cal = 4.184kJ
Bonus: kilowatt-hour(kWh)
1. What is the symbol for the element Gold?
2. Name the element represented by the symbol Ag.
3. Which element has the symbol Pb?
4. What is the name of the element with the symbol K?
5. What is the symbol for the element Boron
6. What is the symbol for the element Antimony?
How do you name acids
Binary acids= hydro+ base of element + ic
Oxyanion(-ate)= base of name + ic
Oxyanion(-ite)= base of name + ous
What is the atomic theory
All matter is made up of atoms and is backed by 200 years of evidence
How do you use density to find the answer
Density * Volume = Mass
Mass/Density= Volume
Mass/Volume =Density
Forms of energy
name the main 3 and then extra 500 for anyone who can name the other 4
Electrical, Chemical, and Thermal/Heat
Sound, Mechanical, Light, Atomic/Nuclear
How do you find the amu
Average Atomic Mass=∑(Isotope Mass×Isotope Abundance)
How do you calculate the Formula mass
FMU=∑(Subcript of element × Atomic mass)