How does chemical change affect the composition of matter

Compounds which are characterized as covalent are generally made up of elements found in which part of the periodic table

In order to occupy the same orbital two electrons must have

1. A crane lifts a 75kg mass a height of 8 m. Calculate the gravitational potential energy gained by the mass:

What property of carbon makes it able to form large macromolecules? Carbon can form five or more bonds with other carbon atoms in chains and rings. Carbon can form single, double, and triple bonds with other carbon atoms.

When an acid reacts with a base what compounds are formed? a. a salt only. b. water only. c. a salt and water. d. metal oxides only.?

Using 3 O2 molecules and 5 H2 molecules, how many water molecules can be produced? Do you have any left over?

The specific heat of a certain type of cooking oil is 1.75 j / (g·°c). how much heat energy is needed to raise the temperature of 2.83 kg of this oil from 23 °c to 191 °c?

Which is true about the temperature of a gas? At a higher temperature, the particles have a higher average kinetic energy. At a higher temperature, the volume of the gas is smaller. At a lower temperature, there are more particles in the gas.

Convertible bonds are usually secured by a first or second mortgage. pay interest only in the event earnings are sufficient to cover the interest. may be exchanged for equity securities. have priority over other indebtedness.

What determines chemical properties and reactions? A. color of a substance B. size of the molecules C. atomic structure and bonds D. physical properties