Which statement is true?

A. Some molecules may contain no atoms.

B. Some elements found in nature exist as molecules.

C. Some compounds include only one type of element.

D. Some atoms are made of two or more different elements.

Earth rotates on is axis approximately once every 24 hours, causing the day to night cycle and?

What can iron filings sprinkled on a piece of paper demonstrate? A. the clockwise motion of the magnetic field B. the counter-clockwise motion of the magnetic field C. the pattern of the magnetic field lines D. the distortion of the magnetic fields

Thermal energy from the Sun travels to Earth as what kind of waves?

3. Felipe was enjoying the sunny day at the beach. He told his friend Carl that he was really enjoying the warm feeling that he was getting as he sat in the Sun. Carl explained that the electromagnetic radiation was responsible for this warm feeling.

Negative charge in a conductor is a result of: lack of electrons neutralization by the atom's nucleus. surplus of electrons

What happens to the particles of the liquid inside a thermometer when the thermometer is heated? They slow down and spread apart. They speed up and spread apart. They slow down and move closer together. They speed up and move closer together.

You did 150 joules of work lifting a 120 - N backpack. how high did you lift the backpack? how much did the backpack weigh in pounds

After the layers of sediment are deposited in one place, they are

A rectangular gasoline tank can hold 50.0 kg of gasoline when full. What is the depth of the tank if it is 0.500-m wide by 0.900-m long, given that the density of gasoline is 6.8 x 102 kg/m3

Which statement best describes the kinetic theory of matter? Matter is made up of compounds that are in constant motion and have energy. Matter is made up of particles that seldom move and do not possess energy.