Unit 0: Metric System and Scientific Notation
Unit 1: Matter in the Universe
Unit 2: Changing Matter
Unit 3: Energy in the Universe
100
Name a country that uses the metric system.
Any country OTHER than the United States, Liberia and Myanmar
100
What is a valence electron?
The electrons in the outermost shell of an atom. These are the electrons available for chemical bonding.
100
Name the reactants in the equation:
6CO2 + 6H2O --> C6H12O6
Carbon dioxide (6CO2) and water (6H2O)
100
What is light made of?
Photons
200
Which base unit is used for measuring mass?
-gram (milligram, gram, kilogram, etc.)
200
If the atomic number of fluorine is 9, and it's rounded mass number is 19, what is the number of protons, neutrons, and electrons (in a neutral atom)?
Protons = 9
Electrons = 9 (in a neutral atom)
Neutrons = 10 (mass number minus the atomic number)
200
Where are the coefficients and the subscripts in the following molecule?
6CO2
6 = coefficient, tells us the number of molecules of CO2
2= subscripts, tells us the number of atoms of oxygen in a single carbon dioxide molecule
200
What do all waves carry?
Energy
300
Name a unit of measurement that would be appropriate for measuring the amount of liquid vaccine in a flu shot.
milliliter (mL)
300
What is the octet rule?
The octet rule is the idea that all atoms strive to have a full outer electron shell, in order to be stable (usually 8 valence electrons)
300
How many atoms of hydrogen are in the molecule
C6H12O6?
12 (subscript to the right of the H)
300
Name a type of radiation that has higher energy than visible light.
Ultraviolet (UV) radiation, X-Rays, and Gamma Rays
400
Describe the format for writing scientific notation. BONUS: For long decimals, what is the sign of the exponent?
_._(...) x 10n
For long decimals, the exponent will be negative.
400
Which groups on the periodic table are MOST unstable? Why?
Group 1 (Alkali Metals) and Group 17/7a (Halogens) are the most unstable because Group 1 atoms only need to lose ONE electron to meet the octet rule, while Group 17/7a atoms only need to GAIN one electron to meet the octet rule.
400
How many molecules of sugar are in:
C6H12O6
One.
Remember that if there is no coefficient, then assume ONE of that molecule.
400
What is the relationship between wavelength and wave frequency?
As wavelength gets longer, frequency decreases (gets lower).
As wavelength gets shorter, frequency increases.
500
Give an example of an amount that would be best measured using scientific notation. Be sure to think about the units of measurement.
Sample Responses:
The volume of the Pacific Ocean, in milliliters (mL)
The diameter of a blood cell, in meters (m)
The distance between Salinas and Paris, in meters (m)
500
Name a difference between an ionic and covalent bond.
1) Ionic bonds steal electrons, while covalent bonds share electrons.
2) Ionic bonds happen between a metal and nonmetal, while covalent bonds occur between two nonmetals.
3) Ionic bonds results in charged atoms, while covalent bonds don't cause a change in charge of their individual atoms.
500
How many total atoms of iron (Fe) are in 3Fe3O2?
9
(3 is the coefficient, and the subscript of Fe is also 3. So 3 multiplied by 3 is equal to 9)
500
What equation would you use to solve for wavelength, given wave velocity and wave frequency?
Remember, you have to REARRANGE the equation!
v = fλ turns into...
λ = v/f