Which of the following is NOT a pur substance A.) milk B.) oxygen C.) water D.) carbon dioxide

If a substance cannot be separated physically is called

Which is the best desciption of a molecule?

The cell membrane allows gas and nutrients to enter in the cell. this is called

What does the chemical formula CaCl show about the compound it represents It is made up of one element. It is made up of two elements. It is made up of three elements. It is made up of four elements

The water pressure at the bottom of the Marianas Trench is approximately 1,100 kPa. With how much force would the water pressure at the bottom of the Marianas Trench push on a fish with a surface area of 0.50 m^2?

For glass fragments to be individualized, what must be true? A. They must fit together B. They must have the same density C. They must look the same D. They must be the same color

In what way would a digital thermometer be preferable to those from a liquid-based thermometer? Digital thermometer readings are easier to use when performing calculations.

Why does the core of the sun contain more helium and less hydrogen than the surface of the sun?

What happens to a light ray passing through the center of a lens?

A spider crawling across a table leaps onto a magazine blocking its path. The initial velocity of the spider is 0.870 m/s at an angle of 35.0° above the table, and it lands on the magazine 0.0770s after leaving the table. Ignore air resistance.