7. What is a chemical bond? A. The force that holds together the elements in a compound B. A representation of chemical properties C. A substance that's composed of atoms D. The attraction of two atoms that holds the atoms together

When an electric circuit operates, a buzzer makes a sound. What happens to the electric charges in this circuit? The electric charges move from the energy source and are used up at the switch.

In a chemical reaction, the reactants are substances that undergo the reaction, and the products are substances that are formed during the reaction. The table below shows the reactants and products of several different chemical reactions.

Which will have the greatest effect on power consumption A.) add more circuit brakes and fuses B.) turn on all electric devices in a circuit C.) turn on only the electrical devices that use the most watts D.

What happens to the kinetic energy of a moving object if the net work done is negative

The four terrestrial planets are so called because they?

Why do different elements emit different colors of light

In an experiment, 108 J of work was done on a closed system. During this phase of the experiment, 79 J of heat energy was added to the system. What was the total change in the internal energy of the system?

J. J. Thomsons experiments provided evidence that an atom

How does our sun differ from most other main sequence stars?

A large body of air hats has similar properties of a temperature and moisture is a