List the number of protons, neutrons, and electrons in each pair of isotopes.

a. 6/3Li, 7/3Li

b. 42/20Ca, 44/20 Ca

c. 78/34Se, 80/34Se

What should be done with an unused or used chemical once it has been taken from the original container?

One mole of potassium permanganate, KMnO4, contains how many grams of oxygen.

What is the specific heat of a material if a 6.0 gram sample absorbs 50.0 joules when heated from 30°C to 50°C?

Describe the stages of gradual metamorphosis

From oxygen silicon chlorine argon which one is a metalloid

What larger energy does light energy come from?

Allows water to pass through easily

Which is a cause of desertification? A. farming B. creating reservoirs C. overgrazing D. driving motor vehicles

What happens when the threat of exposure to dirty air is reduced in a community? There is enough oxygen available for people's lungs to function normally The amount of indoor air pollutants released during a fossil fuel burn decreases There is a

Is chicken noodle soup an element, a compound, a homogeneous mixture, or a heterogeneous mixture?