Which of the following that are examples of a physical property of matter. Select all that apply. Iron (Fe) combines with Oxygen (O) to form rust.

The apple is red in color.

Copper (Cu) conducts electricity.

An apple oxidizes (turns brown) once it is cut and exposed to Oxygen (O).

Nickel (Ni) is magnetic.

Magnesium (Mg) combusts when exposed to Oxygen (O).

Water boils at 100ºC.

Select the correct text in the passage. which sentences describe examples of sustainable living? i live in an old apartment building downtown, but my company is based in an office park on the outskirts of the city. i drive an old car that needs to be replaced. i plan to buy a hybrid for better gas mileage, but for now i am able to carpool with a couple of friends from work. the drive to the office park is about 45 minutes each way, but we do get to work in a modern building. the architects just received a leed certification for the design.

Scientists often have to deal with numbers that are either very large or very small. for example, the radius of the sun is approximately 696,000 kilometers, while bacterial cells are as small as 1.9 × 10-4 millimeters. express each number in an alternate form.

Use the periodic table to determine how many grams of oxygen would be required to react completely with 859.0 g c2h2