What happens when an electron absorbs energy?

What is the organism that lives inside or on the outside of another organism that it feeds of called? a. host B. parasite C. predator. D. prey

When the length of a chemical bond is short ... a. an electron is held tighter and the bond is weaker b. an electron is held loosely and the bond is weaker c. an electron is held tighter and the bond is stronger d.

Removing one electron from an atom results in the formation of an a. ion with a 1 + charge. b. ion with a 1 - charge. c. ion with a 7 + charge. d. ion with a 7 - charge.

What substance cannot be broken down by chemical change

When you coast down a hill on a bike you move faster and faster. Then when you keep coasting on a level surface, you eventually stop moving. What cause you to stop? A. No force is acting on your bike on the level surface, so it stops moving. B.

Given the following densities at 25°C magnesium: 1.7 g/cm3 graphite: 1.8 g/cm3 iron: 7.9 g/cm3 A block of iron has a mass of 819 g. What is the mass of a block of magnesium that has the same volume as the block of iron?

The direct transfer of heat from one substance to another substance that it is touching is called

What holds strands of peptidoglycan together?

What are three steps scientist take to evaluate a scientific explanation

What solid is brown and red, crumbly and weak in the periodic table (probably a metal)