Which of the following is an example of a pure substance?

A. air

B. salt water

C. granite

D. aluminum

List the number of protons, neutrons, and electrons in. B C 6

What type of intermolecular bond occurs between two water molecules? A) dipole to dipole B) hydrogen C) ionic D) polar covalent

What is the ideal pH level for your blood?

Before allowing an employee to enter an excavation at least four feet deep in must be tested for oxygen deficiency and toxic fumes. True or false

What is the term given to the penetrating rays and particles given off by radioactive materials called

A type of rock that undergoes changes because of heat and pressure

How many milliliters of a 1.25 molar HCL solution would be needed to react completely with 60 g of calcium metal Ca+2HCl - - > CaCl2 + H2

What mass of copper is required to replace silver from 4. oog ogre silver nitrate dissolved in water

What kind of bond would two nonmetals typically make?

Which statement best applies collision theory to preventing a dangerous reaction from occurring? Store the reactants together at a low pressure. Keep all sparks or flames away from the reactants. Store the reactants together at a low temperature.