In which group of the Periodic Table do most of the elements exhibit both positive and negative oxidation states?

A. 17

B. 2

C. 12

D. 7

What percentage of solar radiation striking a plant is converted into chemical energy?

Explain why we use 1/12 in finding atomic mass unit?

Ice is less dense than water because of which type of bond? metallic nonpolar covalent ionic hydrogen

What new atom is created in the solar nuclear fusion?

When burning petrol in motor vehicles two gases form which contribute to acid rain. what are the two gases?

If the temperature of water increases as you heat it, the temperature is the independent variable. True False

Which is made by weathering? A. sediments B. minerals C. ash D. magma

Which Of These Is An Indication That A Chemical Reaction Has Occurred? A. Freezing Of A Substance B. Melting Of A Substance C. Boiling Of A Substance D. Formation Of A Gas

When a soda can is dropped, it should not be immediately opened. Why? (A) The soda will squirt out because of decreased temperature. (B) The soda will squirt out because of increased temperature.

Explain the difference between layers and band.