What is the meaning of the word tetrad which is from the Greek word tetra?

A. multiple

B. tetris

C. four

D. double

What elements make up the halogen family

In a controlled experiment the factor tested is called the

Helium has two protons, two neutrons and two electrons. what is the charge of this atom? a. 0 b. 2 c. 4 d. more information is needed.

Light shining on a strip of metal can dislodge electrons. Do you think this is more consistent with light being made up of waves or of particles? waves particles not sure

How many moles of tin atoms are in a pure tin cup with a mass of 37.6 g?

What is the cation name for alcl3?

Moles of hydrogen gas (14) 0.00336 mol 0.00481 mol Moles of hydrogen per g sample (n*,) mol/g mol/g

A hurricane and a typhoon are the same thing true or false?

Identify the element that chlorine forms a covalent bond with

A child pulls a sled up a snow-covered hill. The child does 405 J of work on the sled. If the child walks 15 m up the hill, how large of a force must the child exert?