Ionic compounds are made of ions, and yet the overall charge of an ionic compound is neutral. Why?

How much energy must be absorbed by water with a mass of 0.5 kg in order to raise the tempature from 30 degrees celcius to 65 degrees celcius?

You've made the hypothesis that the less rainfall a cactus plant gets, the taller it will grow, since cactuses like dry conditions. What is one thing that you should control in an experiment designed to test this hypothesis? A.

What observation would indicate that an endothermic reaction is occuring in a beaker

Which of these is an example of a composite material? A. Wood planks used as beams to support roofs B. Aluminum for the outer layer of an airplane C. Fiberglass (a polymer that's is reinforced with embedded glass fibers) D.

Which discovery is considered to have led to the greatest advancements in the field of medicine?

What is the relationship between the atomic numbers and ionic radii of the elements in the group 7a

The process of splitting an atom into two lighter atoms is called A. nuclear disintegration. B. nuclear separation. C. nuclear fission. D. nuclear fusion.

It is widely known that fossil fuels pollute the environment and cause harmful effects. Why then are fossil fuels still being widely used? 1. not enough of society knows the harmful nature of fossil fuels 2.

What is hyphen notation

The density of aluminum is 2.70g/cm^3. a piece of aluminum foil has a volume of 54.0 cm^3. what is the mass of this piece of aluminum foil?