All of the following are signs that a chemical change has taken place EXCEPT for:

Explain the difference between mixtures and compounds.

This gas makes up over 65% of your body:

A 7.0 g rock is dropped into a graduated cylinder containing 15.0 mL of water. The water level rises to 18.0. What is the volume of the rock?

In the periodic table, what is a group?

Oxides are compounds that always include

One special type of solution that is not a liquid, but a solid, includes metals such as bronze, brass, and stainless steel. These metals are called____.

According to the periodic table, how many electrons does an uncharged element of oxygen have?

Iron and oxygen form iron oxide which is commonly called rust. Which of the following is a product in the reaction?

Which of the following numbers indicates an acidic pH value?

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