The atomic number of an element includes

Every object persists in its state of rest or uniform motion in a straight line unless it is compelled to change that state by force and pressed on it?

The substances that are present before any chemical reaction are called

Everything around us is made of

Which is a pure substance? A: soda B: gasoline C: salt water D: carbon dioxide

An object becomes positively charged when it

A 5.701 gram sample of an organic compound containing C, H and O is analyzed by combustion analysis and 12.28 grams of CO2 and 5.029 grams of H2O are produced. In a separate experiment, the molar mass is found to be 102.1 g/mol.

One amu is equal to the mass of an electron the mass of one proton or one electron the mass of one neutron or one electron the mass of one neutron or one proton

Given an unknown mixture consisting of two more substances, explain how could you determine whether that mixture is a true solution, a colloid or a suspension

Which isotope of lithium has 3 neutrons?

Write the complete electron configuration for the noble gas found in the third period