Physical Science Review- Competency 2
Objectives 2.a-2.b.
1. What other element has similar properties to Chlorine Cl (#17)
a. Why?
2. How many valence electrons does oxygen have? How do you know?
3. What is group 18 called?
a. alkali, alkaline-earth, transition, noble gases, or halogen
4. What type of bond will beryllium & sulfur form?
a. Covalent, ionic, metallic
5. Which of the following elements is the description most likely talking about:
a. Brittle, poor conductor, non-ductile, dull
b. Carbon, gold, Silicon, calcium
6. How many atoms of lithium would it take to ionically bond to one atom of nitrogen?
7. Which equation is balanced? Balance the one that is not already balanced.
A) H3PO4 + KOH => K3PO4 + H2O
B) HCl + NaOH => NaCl + H2O
8. How many water molecules are needed to balance this equation
a. 2 NaOH + H2CO3 => Na2CO3 + _? H2O
9. What type of ion makes up an acid? ______ a base? _______
10. Identify the following as an acid or a base.
NaOH
HNO3
HCl
KOH
H2S
Identify the molecule: C H O
6 12 6
11. Where are the transition metals on the periodic table?
12. What divides the metals from the nonmetals?
13. List two elements that will form a covalent bond.
Objective 2.c
Draw a distance-time graph for each of the following:
14. Constant speed
Speeding up
15. Calculate the speed of the object whose graph is shown below.
No Motion
Physical Science Review- Competency 2
16. Which car has the fastest speed?
Objective 2.f.
17. Identify each as Newton’s 1st, 2nd, or 3rd law of motion.
a. paddling a canoe and the canoe moves forward
b. a larger engine makes a car go faster
c. a ball sits on a tee before being hit by a bat
d. f=ma
e. For every action, there is an equal reaction.
f. law of inertia
Objective 2.d.
18. Identify the structure shown and its function in the power grid.
a.
c.
b.
d.
Objective 2.e.
19. Identify one positive use for each of the following types of radiation:
a. microwavesb. ultravioletc. x-rays
d. gamma rays20. Which types of radiation are the most harmful to living things? High energy or low energy
21. What is one negative effect of ultraviolet radiation?