This element is less reactive than lithium and magnesium but more reactive than zinc. Which element is this?

A. Na

B. Al

C. Ca

D. Be

What does the term diatomic molecule mean

What information does the atomic mass of an element provide

Which energy source uses a fuel that produces a large amount of energy from a small amount of fuel

Which of the following factors affect friction? A. the smoothest of the surfaces that are touching B. the amount of force that is pressing them together C. Both A and B D. Neither A nor B

Why do the particles of objects have both kinetic and potential energy?

Which civilization formed a confederation thay may have impacted the us government A. Powhatan B. Algonquian C. Iroquois D. Anasazi

Jasmine breathed against the window pane and noticed that her breath made a spot on it from the water vapor in her breath. Which stage of the water cycle does this show? A. precipitation B. evaporation C. condensation D. transpiration

Amber has developed a line of organic lotions and handmade soaps with unique, herb-based scents and a touch of bee balm. She plans to sell these products to the wealthy residents of a nearby resort town.

Two pure elements react to form a compound. One element is an alkali metal, X, and the other element is a halogen, Z. Which of the following is the most valid scientific claim that can be made about the compound? a. It has the formula XZ2 b.

Are protons positive and neutrons neutral