A bird sitting on a tree flies away as you walk by. Which of the characteristics explains the bird's behavior?

What is the symbol for mercury on the period table?

Which of the following was most likely not present in creating the amino acids of early Earth's waters of the past? A:Nitrogen B:Sulfur C:Hydrogen D:Ammonia

As the temperature of a chemical reaction in the gas phase is increased, the rate of the reaction increases because (1) fewer particle collisions occur (2) more effective particle collisions occur (3) the required activation energy increases (4) the

In a test tube you add 2 mL of saturated chlorine water followed by about 1 mL of an organic solvent such as heptane (or cyclohexane). The test tube is shaken and you notice that the heptane layer has a yellow color.

In a car crash, inertia could cause you to crash into the windshield. Question 14 options: True False

What causes lightning? a) thunder b) an electric discharge c) rising warm air d) air masses meeting

In a problem, you are given two pressures and one temperature at constant volume and amount of gas. You are asked to find a second temperature. What law should you use?

How many cups are in a 5-lb. bag of flour?

How is oxygen separated from other substances nearby?

What is the definition of solution in chemistry