9. A change in color when two solutions are mixed together is a clue that a

__has taken place.

A. chemical change

B. physical change

C. temperature change

D. change in state

Lance Armstrong can ride his bicycle at speeds of 15m/s. If he is traveling at this speed, how long will it take him to travel 81.9 mmeters?

Which of the following most accurately represents John Dalton's model of the atom? A. a tiny, solid sphere with an unpredictable mass for a given element B. a hollow sphere with a dense nucleus C.

A baker touches a pie right after taking it out of the oven. Which statement best explains why the pie feels hot? A. Molecules in the skin move faster than molecules in the pie, so heat is transferred to the pie. B.

What is the formula of Iron 2 Carbonate?

How many moles of Lithium Fluoride will you need to add to 250.0 mL of water to make a 5.00 M solution?

A student was comparing the solubility of equal amounts of table salt and table sugar at different temperatures. The table below shows the four samples that the student used and the temperature of the water that they were dissolved in.

How many cases of measles would you predict were reported last year

what happens when baking soda is mixed with vinegar a a new substance is formed B the substances are the same c but the baking soda stays the same but the vinegar changes form D the mixture turns from a liquid into a solid

Which celestial object is found in kuiper belt

When K - and I - combine