Which group of elements contains a metalloid?

(1) Group 8 (3) Group 16

(2) Group 2 (4) Group 18

Explain why there is more than one complete spectrum formed by the grating

How much energy is lost through carrying out life functions?

A Sattelite is a (n)

E. the compound sodium sulfate is soluble in water. when this compound dissolves in water what ion would be present in solution? -

Which energy source is a nonrenewable resource? A. oil B. sun C. trees D. wind

Student B pushed on a cart against the wall with 500 N of force. The cart didn't move. How do u explain what happened?

What is unique about the way that transition metals form compounds? a. They don't form compounds c. They can form bonds with the electrons in the two outer-most shells b. They are the most reactive d. They can donate all of their electrons

What prompted rutherford to do the alpha particle scattering experiment?

How many moles of hydrogen would be required to produce 5.0 mol of water?

What is the biggest difference between an exothermic and endothermic process? A. The direction of energy flow. B. The amount of energy transferred. C. The type of energy being transferred. D. The speed with which energy is transferred.