Think of an object that could be an analogy to the cell membrain

What is the difference between a closed system and open?

What method can be used to seperate parts of liquid mixture wwhen the entire mixture can pass through a filter

The electromagnetic force is attractive. repulsive. both attractive and repulsive. neither attractive nor repulsive.

Why should the water in the calorimeter be stirred throughout the reaction?

The electron configuration of me Ne is?

Tyrell is doing an experiment to find out which evaporates faster-water, liquid soap, or apple juice. To make sure Tyrell experiment is a fair test, he should A. use three containers that are the same size and shape. B.

If an atom of Bromine (Br) becomes an ion, which of the following does it most likely form? a. Br+ b. Br7+ c. Br- d. Br7-

The language of variables

Which of the changes are physical changes

When PCl5 solidifies it forms PCl4 + cations and PCl6 - anions. According to valence bond theory, what hybrid orbitals are used by phosphorus in the PCl4 + cations?