Which of the following is a step that is NOT in the scientific method?

What is the mass number for an atom of xenon containing [x] neutrons?

The SI base unit of time is the hour.

What is the definition of a scientific law?

How many protons are in an atom of cobalt?

Which of the following groups of elements tend to form cations?

A white powder mixture is placed into water. Some of the powder sinks to the bottom of the container, some rises to the top. The separation of the powder mixture is an example of

How many electrons are in an atom of potassium?

Milk is a pure substance.

Which is a method for separating a liquid-liquid mixture, such as water and alcohol?