Fill in the blanks: The __________ force affects anything that has _______.
Electromagnetic force - charge
Fill in the blank: The _________ of a tool lets us know how precise it can be and helps us pick where to round to in addition problems
Resolution!
Fill in the blank: The strength of _________ between particles determines the temperatures at which it will change phase.
Intermolecular forces (or cohesion)!
Fill in the blank: Substances that decay have a measurable __________ that can help us determine how old they are.
Half life!
Fill in the blank: Valance electrons affect which atoms can make _________ with other atoms to make molecules.
Chemical bonds!
What is the most common isotope of the element carbon?
Carbon-12
Why do scientists care whether a measurement is written "2" grams or "2.0" grams?
Significant digits help scientists understand the strength of the tools used to make the measurement.
Which section(s) of this graph show a substance changing phase?
B to C and D to E (the flat sections)
How do engineers keep a fission nuclear reactor from melting down?
They use substances that absorb neutrons to slow down the chain reaction.
Fill in the blanks: a chemist would call water a _______ and the particles that make it up ________
Write the noble gas shorthand electron configuration for Thallium (Tl).
[Xe]6s24f145d106p1 (use your colored periodic table!)
How many square centimeters (cm2) could fit in a square meter (m2)?
10,000 cm2 = 1 m2
Draw a graph showing the relationship between volume and pressure of a gas.
Draw an inverse graph!
What daughter nucleus would be left over after Uranium-235 goes through alpha decay?
Thorium-231!
Write the unabbreviated electron configuration for Fluorine.
1s22s22p5 (use your colored periodic table!)
207 mass - 82 protons = 125 neutrons
What is the correctly rounded mass of 75.0 mL of a substance with a density of 1.834 g/mL?
138 grams!
The mass of 1 million atoms of gold.
What is 3.2*10^-16 grams?
Polonium-214 has a relatively short half-life of 164 seconds. How many seconds would it take for 8.0 g of this isotope to decay to 0.1 g?
What is the final volume of a balloon if temperature is halved and pressure is halved?
It wont change size. Lowering temp lowers volume, but lowering pressure raises volume.
What is the charge of an atom of Carbon with 5 electrons in its orbitals?
6 protons - 5 electrons = +1 charge
256 googs = 1 plotz
1 wraslm = 12.3 plotz
3.4 tpocks = 1 mulm
How fast is 4.27 googs/mulm in wraslms/tpock?
0.000399 wraslms/tpock
The correctly rounded final pressure if a rigid container starts with 1.0 atm of pressure at 30.0 ºC and is cooled to 0.0 ºC.
What is 0.90 atm?
Write a CER style response: Explain which type of decay (alpha, beta minus, or beta plus) is most likely to occur in one of the four regions shown below.
Make a claim
Back your claim up by reading the x and y axis of the graphs.
Explain why that type of decay would fix the imbalance of protons and neutrons.
Write a CER style response: which lab, activity, or assignment will help you the most on this upcoming test?
Choose an assignment to include as your claim. Write some evidence that makes you think that material will be on the test. Explain in reasoning why that activity was useful for learning that material.