Download Chemistry DCA Review Sheet

Chemistry DCA Review Sheet
Atoms
1. What are subatomic particles, what are their charges, and where are they
found?
2. What is the nuclear model of the atom? Draw it and label the following:
proton, neutron, electron, energy level, and nucleus.
3. What is the mass of an atom and how is it determined?
4. How do atoms define (or determine) elements?
Protons and Neutrons
5. How do protons determine an element’s identity?
6. How do valence electrons determine and element’s chemical properties?
Periodic Table
7. How are elements arranged on the Periodic Table?
8. What does the atomic number represent?
9. What determines the atomic mass of an element?
10. What do columns on the Periodic Table Represent, and how is the information
used?
11. What do the rows on the Periodic Table represent, and how is the information
used?
12. What physical and chemical properties are determined by investigation the
Periodic Table?
13. Label the following on the Periodic Table: periods, groups (families), metals,
non-metals, metalloids, where protons and protons + neutrons can be found.
Chemical Formulas and Equations
14. In a chemical reaction, how do the reactants recombine to form products?
15. What is a chemical formula? What information does it show.
16. Label the following on the formula: Subscripts, coefficients, elements
2NaHCO3
17. What is a chemical equation? What specific information does it show?
18. Label the following on the chemical equation below: reactants, products,
formula
CaCl2 + 2NaHCO3  CaCO3 + 2NaCl + H2O + CO2
19. What does it mean to “balance” an equation.
20. Are the following 2 equations balanced or not? If not, balance the equation.
__Cu + __ AgNO  __CuNO3 + __ Ag
___CaO + ___SO2  ___CaSO3
21. What is the Law of Conservation of Mass? How does it relate to balanced
equations
Chemical Reactions
22. What happens during a chemical reaction?
23. What is a chemical equation?
24. What are the four signs that indicate a chemical reaction has occurred?
25. What are the 5 types of chemical equations? Give an example for each.
Type of Equations
Example