A chemical reaction is when two elements or radicals change places with two other elements or radicals is a ... reaction

A - double replacement

B - combination

C - decomposition

D - substitution

Why do stars explode?

Why do the astronauts float inside space stations?

Solids are usually more dense than: gases liquids plasmas all of the above

A force of 9 N acts on an object on a floor to make it move at 6 m s^-1 what would happen to the object if the force is reduced to 3 N?

Why is a well-insulated building comfortable in both cold and hot weather? The insulation keeps the cold in during the summer and the cold out in the winter. The insulation becomes a good conductor in the cold weather.

What is the average acceleration of the particle between 0 seconds and 4 seconds?

How many lenses does a compound microscope have

What force is generated by a 10,000 kg mass accelerating at 4.3 m/s squared

A small object slides along the frictionless loop-the-loop with a diameter of 3 m. what minimum speed must it have at the top of the loop in order to remain in contact with the loop

A chemical reaction is when two elements or radicals change places with two other elements or radicals is a ... reaction A - double replacement B - combination C - decomposition D - substitution