An ideal gas is made up of gas particles that

Lenses can be found in a variety of objects. Which example does not contain a lens? A. a magnifying glass B. a telescope C. chemical safety goggles D. a microscope

Which of the following statements are true? a. The energy change for this process is the electron affinity of the Ca + ion. b. The energy change for this process is the negative of the first ionization energy of the Ca atom. c.

What must happen to an atom of magnesium in order to become a magnesium ion Mg+2?

Gold has a density of 0.01932 kg/cm3. What volume (in cm3) would be occupied by a 33.3 get sample of gold?

Describe How do you make a metal object such as a nail into a magnet? What happens to make it magnetic?

Which type of reaction occurs in the following? 2HgO (s) - - 2Hg (l) + O2 (g) 1. a decomposition reaction in which a metal is reduced 2. an acid-base neutralization reaction to produce oxygen gas a displacement 3.

Is pulverizing an aspirin a physical or chemical process

Explain two reasons why we can conclude that the rise of the water in the glass tube is due to root pressure and not transpiration or capillarity

Four type of molecular models

How many particles are in 1 mol of carbon? 1 mol of lithium? 1 mol of eggs? will 1 mol of each of these substances have the same mass?