A sample composed only of atoms having the same atomic number is classified as

(1) a compound (3) an element

(2) a solution (4) an isomer

Which of the following types of matter can occupy the same space at the same time?

Under what circumstances is isolation necessary when dealing with hazardous material events?

Which of the following statements explains why a sugar solution does not conduct electricity? a. Equal numbers of sugar molecules carry positive and negative charges, so no net charge is carried b.

Which is an example of a solution? A. sand B. salad C. carbon D. seawater

How does water enter the aquafer? A. Precipitation B. Percolation C. Transpiration D. Condensation

You are given a clear solution of KNO3. Using 3-4 sentences explain how you would determine if the solution is unsaturated, saturated, or supersaturated

Which element combination (s) would result in electrons being shared? [] sodium (Na) and oxygen (O) [] carbon (C) and fluorine (F) [] oxygen (O) and hydrogen (H) [] aluminum (Al) and chlorine (Cl)

If you start with 4 moles of iron and 3 moles of oxygen to produce iron oxide, what is the limiting reagent? (You will need to balance the equation first.) Fe + O2 - > Fe2O3

Is burning wood a physical change

A gas is located inside a closed container. if the gas is allowed to occupy more volume inside the container, what will happen to the pressure? (note: there is no gas added to the container.)