Rain occurs after water has evaporated from the Earth's surface. Which of these is the main source of water on the Earth's surface?

What is anything that has mass and takes up space considered to be?

Which of the following pairs of elements is most likely to form an ionic compound?1. Nitrogen and sulfur? OR 2. Magnesium and Fluorine?

Is oxygen a stable gas

A scientist wants to make advances in the way skin cancer patients are treated. What is something she should do first? O A. Study the side effects of her new treatment. O B. Look at the success rate of the current treatments. O C.

How many moles of oxygen (O) atoms are in a sample of 3.98 * 1023 atoms?

What occurs in a chemical reaction? Products are formed from reactants by the breaking and forming of new bonds. Products are formed without chemical bonds being broken. Reactants are formed without chemical bonds being broken.

What information does the atomic mass of an element provide

The following diagram represents a vertical cross section of sedimentary rock layers that have not been overturned. Which principle best supports the conclusion that these layers have undergone extensive movement since deposition?

What kind of ions do a sodium atom and a chlorine atom become when a valence electron is transferred from one to the other?

NaOH and bleach have several characteristics in common. They include all BUT one of the characteristics listed.