NOS & Matter
Atoms & Nuclear
Electrons & Periodic Table
Ionic & Covalent
Reactions
100
Which step of the scientific method is missing:
1.Ask a question
2. ?????????????????????
3. Design Experiment
4. Collect Data
5. Analyze Data
6. ?????????????????????
7. Communicate Results
2. Make Hypothesis
6. Form Conclusions
100
What does atomic number tell you?
Number of protons (and electrons if neutral atom)
100
What charge and mass does an electron have?
Negative charge, negligible mass
100
What types of elements are in Ionic compounds?
Metal & Nonmetal (Opposite charges)
100
What type of reaction is this:
2Na + Cl2 >> 2NaCl
Synthesis
200
Give an example of a chemical change.
Rust, Burning, Explosion (any type of reaction)
200
Which particle has the weakest penetrating power?
a. Beta
b. Gamma
c. Positron
d. Alpha
D. Alpha
200
How many valence electrons does chlorine have?
7
200
What is the name of the following compound:
C2Cl4
Dicarbon tetrachloride
200
How would you balance the following equation:
___BaCl2 + ___NaBr >> ___CaCl2 + ___BaBr2
___BaCl2 + __2_NaBr >> ___CaCl2 + ___BaBr2
300
Which is an EXTENSIVE property?
a. Color is blue
b. Density is 2g/mL
c. Mass is 5g
d. Condutive
c. Mass is 5g
(Extensive = changes with amountIntensive = stays the same no matter how much)
300
What is the difference between Nitrogen-14 and Nitrogen-15?
Different mass, different isotope, and different number of neutrons
300
Which atom is larger? (use a periodic table)
O vs. S
Sulfur
300
What is the shape of the following compound:
Tetrahedral
300
How could you write this equation in words:
CaCO3 + 2HCl >> CaCl2 + CO2 + H2O
Calcium carbonate plus hydrogen chloride yields calcium chloride, carbon dioxide, and water.
400
Which particle diagram shows a mixture? 
B.
400
Name one atomic structure experiment and what discovery was made.
Gold Foil Experiment = Nucleus
Cathode Ray Experiment = Electrons & Protons
400
Why does atomic radius decrease across the periodic table?
Nuclear Charge (more protons in the nucleus)
400
What is the formula for Magnesium Hydroxide?
Mg(OH)2
400
When will double replacement be no reaction?
If all products are (aq) soluble
500
Biochemistry is the study of________________.
the chemical processes in living things
500
List 5 models of the atom.
Billiard Ball (Dalton), Plum Pudding (JJ Thompson), Rutherford Model, Bohr Model, Quantum/Electron Cloud Model
500
What is the short hand electron configuration of silver? (Use a periodic table)
[Kr]5s24d10
500
What is the criss-cross method and how do you use it?
Determine the ions of each element in the compound, then criss-cross the charges and make them subscripts in the compound.
500
Is AgCl soluble or insoluble in water?
Insolube