Calcium metal reacts with a potassium chloride solution to form calcium chloride and potassium ions. Classify this reaction. Ca (s) + 2KCl (aq) → CaCl2 (s) + 2K + (aq)

If you take a ball of moist clay and throw it against the wall it will stick. However, if you take a handful of clean sand and throw it against the wall it will just fall to the floor. Explain these two behaviors.

How do convection currants affect the movement at the Mariana Trench?

The purpose of striking the ball in a volleyball game is to: 1. Place the ball in motion 2. Change the direction of the ball's motion 3. Slow the ball's motion 4. All of the above

The atmospheric pressure at the surface of Venus is 91 times the pressure at sea level on earth. With approximately how much total force would Venus's atmosphere push on an average human being at sea level?

If every 10th student on a non alphabetized list of names was choose from your school to answer a survey, this group would be a A. independent sample B. random sample C. blased sample D. experimental sample

If ta battery on a circuit is a 9-volt battery, each light on the circuit gets what

When a positive charge moves in the direction of the electric field, what happens to the electrical potential energy associated with the charge? A. It increases. B. It decreases. C. It remains the same. D. It sharply increases, and then decreases.

Electrons flow in the wire from a (n) terminal to a (n) terminal

A radioactive isotope of potassium (K) has a half-life of 20 minutes. If a 40.0 gram sample of this isotope is allowed to decay for 80 minutes, how many grams of the radioactive isotope will remain? A) 2.5 grams B) 5.0 grams C) 10.0 grams D) 40.

What are the SI units of measure for length, mass, and liquid volumes?