All matter is made of tiny particles called atoms, molecules and ions; the tiny particles in solids are tightly packed and can only vibrate. The particles in liquids also vibrate but are able to move around by rolling over each other and sliding around. In gases, the particles move freely with rapid, random motion.
Answer:
13.75
Explanation:
gets halved every 8 days so halved twice
Some signs of a chemical change are a change in color and the formation of bubbles. The five conditions of chemical change: color chage, formation of a precipitate, formation of a gas, odor change, temperature change.
Boyle's Law states: pV = constant.
24.43 x 1.895 = 46.29485
therefore, 15.6 x _____ = 46.29485
unknown = 2.968L
Answer:
In an experiment in which blood pressure medication is tested, one group is given the blood pressure medication while the control group is given a placebo pill.
In a test of anxiety treatment, one group attends individual therapy sessions and receives a new medication. The control group receives only an inert pill.
A treatment for drug addiction is being tested. A group of meth addicts are given the treatment while the control group is given the placebo.
Researchers are testing the effectiveness of a drug intended to reduce symptoms of Crohn's disease. Many sufferers of Crohn's disease are recruited for the effort and the group that receives the placebo is the control group.
A treatment for hair loss in men is being tested. Men of the same age range are gathered. One group receives an application with the active ingredient while the control group receives an application that appears the same but does not have the active ingredient in it.
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