|
|
239 |
BalanceEquation |
Given the formulas for the reactants and products of a chemical reaction, the student balances the equation (i.e., by finding appropriate coefficients). |
1
|
2
|
1
*
|
Ready |
Edit
|
|
|
150 |
DetermineElectrons |
Given the atomic number of and the charge on an atom(ion), the student determines the number of electrons in the atom(ion). |
4
|
1
|
1
*
|
Ready |
Edit
|
|
|
151 |
DetermineMetal |
Given information about a substance's luster, ductility, malleability, conduction of heat and electricity, state at room temperature, and density, the student determines whether the substance is likely to be a metal. |
1
|
1
|
2
|
Ready |
Edit
|
|
|
152 |
DetermineProtonsNeutrons |
Given the atomic number and the mass number of an atom, the student determines the number of protons and the number of neutrons in the atom. |
2
|
1
|
1
*
|
Ready |
Edit
|
|
|
153 |
ExplainConcentrationRate |
The student explains in terms of collision frequency why chemical reaction rates tend to increase with increasing reactant concentration. |
2
|
1
|
2
*
|
Ready |
Edit
|
|
|
163 |
ExplainTemperatureRate |
The student explains in terms of collision frequency and collision energy why chemical reaction rates tend to increase with temperature. |
1
|
1
|
2
|
Ready |
Edit
|
|
|
226 |
IdentifyParticlesCharges |
The student identifies the three subatomic particles comprising (most) atoms and their charges. |
3
|
1
|
1
*
|
Ready |
Edit
|
|
|
224 |
PredictIonic1to1 |
The student predicts the ionic compound made by a group 1 element with a group 17 element, a group 2 element with a group 16 element, or a group 13 element with a group 15 element. |
4
|
1
|
1
*
|
Ready |
Edit
|
|
|
225 |
PredictIonic1toX |
The student predicts the ionic compound made by a group 1 element with a group 16 or 17 element, or a group 2 or 13 element with a group 17 element. |
4
|
2
|
1
*
|
Ready |
Edit
|
|
|
162 |
PredictIonicXtoY |
The student predicts the ionic compound made by a group 2 element with a group 17 element or a group 13 element with a group 16 element. |
4
|
2
|
1
*
|
Ready |
Edit
|
|
|
222 |
PredictProductAtoms |
Given the reactants of a chemical reaction, the student predicts the number and type of atoms in the products. |
2
|
1
|
1
*
|
Ready |
Edit
|
|
|
223 |
RepresentCompound |
Given a description of the constituents of a compound in words, the student represents the compound as a chemical formula. |
1
|
1
|
1
*
|
Ready |
Edit
|