2. Identify the following as either a homogenous mixture or a heterogenous mixture?

a. Air

b. Kool-aid

c. Chocolate milk

d. Chocolate chip cookie

e. Lucky charms

f. Cottage cheese

Wave y and wave z are two types of electromagnetic waves traveling through a vacuum suppose the frequency of wave y is about three times greater than the frequency of wave z. Which Best compares the energy transferred by the two waves

If a student needs to make exactly 2.5 liters of a 1.25 M solution of acetic acid from the 12.0 M stock solution in the chemistry closet, what must the student do?

What is below the Ecosystem.

What does the position of an element in the periodic table tell you?

A sip of wine is about 2.0 mL. If a bottle of Lafite Rothchild costs $278 and contains 24.5 fl ounces how much does just one sip cost?

Where should you keep your glass of soda if you want it to remain fizzy

Why do the atoms in a piece of copper metal have no net charge? -The charges of the positive and negative copper ions cancel each other out. -The number of electrons surrounding each copper nucleus doesn't change.

In a closed system, the total heat given off by warmer substances equals the total heat energy gained by cooler substances (qwater = - qliquid).

What compound will not give oxygen on heating

Choose one property of water that makes it unique. Describe the property and explain the chemical or physical?