Complete each statement with the word that makes it true. The noble gases are the least
of any elements on the periodic table.

The
form acidic compounds with hydrogen.

The halogens are the most reactive among all the
.

Alexander calder's mobiles are an example of motion because it uses forces of wind and water.

Solar cell a produces 100 joules of energy, when a light source is shown on it for 3 minutes. solar cell b produces 200 joules of energy when the same light source is shown on it for 5 minutes. which solar cell works better? a) solar cell b, because it produces more energy. b) solar cell b, because it generates more power. c) solar cell a, because it produces energy quicker. d) solar cell a, because it generates a greater wattage. eliminate

Order the sequence of ideas that lead to marie curies discovery of radioactive elements number the events in chronological order starting with the oldest