The cycle that involves the change of water from liquid to vapor and back by evaporation, condensation and precipitation is the:

a.

carbon cycle

c.

water cycle

b.

nitrogen cycle

d.

none of the above

In the following table, all the columns for the element oxygen are filled out correctly. Element Electron Structure of Atom Electron Structure of Ion Net Ionic Charge Oxygen 1s2, 2s2, 2p4 1s2, 2s2, 2p6 - 2 True False

What property of a light bulb's filament causes it to glow? 1. high voltage 2. high resistance 3. low resistance 4. low voltage

Experiments with cathode rays led to the discovery of the a neutron. b proton. c electron. d nucleus.

How are rechargeable batteries recharged? a. Adding new reactants c. Passing electric charge through the reactants b. Changing to terminals d. Changing out the electrolytes

What characteristic do photosynthesis and combustion share?

1) Explain why oxygen is a fairly reactive element while neon is not. 2) Explain why beryllium loses electrons when forming ionic bonds, while sulfur gains electrons. 3) Explain why fluorine and chlorine have similar reactivities (Hint.

You add heat to matter, the atoms that make up the matter will begin to move?

What is the h2 h2o molar ratio?

Which of earth's systems was most affected by fossilized dinosaurs? A. Biosphere B. Hydrosphere C. Lithosphere D. Atmosphere

What factors are used to determine whether a bond will be polar or nonpolar? And what factors are used to determine whether a molecule will be polar or nonpolar?