Which of the following is a nonmetal? A. aluminum (Al) B. calcium (Ca) C. potassium (K) D. oxygen (O)

Which term describes the degree to which an element attracts electrons? which term describes the degree to which an element attracts electrons? electronegativity. polarity. oxidation. reduction?

What is hardest type of coal?

Which of the following is an example of pseudoscience? psychic experiences benefits of aspirin bacteria as a cause of disease existence of viruses

What two phase changes occur between vapor water and liquid water and at what temperature does each phase change take place

Which of these pairs of elements is very likely to form a covalent bond?

What is the temperature of 100 liter container having 1 mole of an ideal gas at a pressure of 20 kilopascals

5.2*10^26 molecules of ch4 in volume

Which of the following statements about igneous rocks is correct A. intrusive igneous rocks are formed when magma is called above the ground. B. Extrusive igneous rocks are formed when magma is cooled above the ground C.

The compound KOH is called

A balloon contains 1.00 mol helium gas at STP. What will the volume of the balloon be if the pressure increases to 2.00 atm?