4 th Q reviewer. 1.Which substance is the most basic? F 2.Which substance/s turn litmus paper to red? A, B and C 3.Which substances releases the most.

4th Q reviewer

1. Which substance is the most basic? F2. Which substance/s turn litmus paper to red? A, B and C3. Which substances releases the most hydrogen ion in water? A4. Which substance does not change the color of blue and red litmus papers? D5. True or False. E is more basic than F. False6. B releases _________ions in water. Hydrogen/ H+

7. E releases ___________ions in water. Hydroxide/ OH-

8. Which substance is neither an acid nor a base? D9. What kind of reaction happens between A and F? What products will be formed? Neutralization reaction; salt and water.

Substance pH

A 2.2

B 4.6

C 5.7

D 7.0

E 8.9

F 11.5

XY

1. Name the air masses at V W X Y Z.2. Describe the temperature and humidity of each.

Z

X

W

V

Answers

1. V – maritime tropical; warm and humid2. W – maritime polar; cold and humid3. X – continental polar – cold and dry4. Y – maritime polar – cold and humid5. Z – continental tropical – warm and dry

H

L L

H

Which picture shows the correct direction of moving air, A or B?Why?

B. Moving air or wind flows from an area of high air pressure to an area of low air pressure.

A B

Which area would be more humid, X or Y? Y

X

Y

Which area has a lower altitude, X or Y? X

X

Y

Which area would have a higher barometer reading, X or Y? Y

X

Y

Which area would have a lower temperature, X or Y? X

X

Y

Which In which area (red) would there be a higher psychrometer reading? Why? Z is surrounded by water.

Y

Z

A

B

C

Identify the processes A, B and C• Evaporation - C• Condensation - B• Precipitation - A

A

B

1. What type of front is in A? cold 2. What type of front is in B? warm3. What type of front is in C? occluded

C

CLASSIFY THE FF. REACTIONS. STATE WHETHER IT DESCRIBES A NUCLEAR FISSION OR FUSION

REACTION.

1. Splitting of a heavy nucleus such as Uranium, into lighter ones.Nuclear fission

2. Combining of lighter nuclei into a heavier nucleus.

Nuclear fusion3. Takes place in the reactor core of the sun.

Nuclear fusion4. Controlled in a nuclear power plant.

Nuclear fission

CLASSIFY THE FF. REACTIONS. STATE WHETHER IT DESCRIBES A NUCLEAR FISSION OR FUSION

REACTION.

5. Requires tremendous pressure and extremely high pressure to produce/release energy.Nuclear fusion

6. Generates electricity to power homes and industries.Nuclear fission

7. Also known as thermonuclear reaction.Nuclear fusion

8. Helium is formed from hydrogen nucleiNuclear fusion

Balance the ff. equations and identify the type of reaction.

1. 4Al + 3O2 2 Al2O3

composition

2. Fe2O3 + 3H2SO4 Fe2(SO4)3 + 3H2O

Double replacement3. 2Al + 3CuO Al2O3 + 3Cu

single replacement4. K2O + H2O 2KOH

composition5. (NH4)2CO3 2NH3 + CO2 + H2O

decomposition6. CaCl2 + 2AgNO3 2AgCl + Ca(NO3)2

double replacement