People have developed models of the universe for thousands of years. Identify two observations that a model of the universe would need to explain in order to be useful

Thermal energy is the energy associated with ... lectric fields. being stored in chemical bonds. the pull of gravity. temperature.

Carbon and non-metals are found in which area of the periodic table

A student is trying to calculate the density of an ice cream cone. She already knows the mass, but she needs to determine the volume as well.

What is acid rain? Which fossil fuel causes acid rain? What are the chemical reactions that produce the acid?

Rebound gpe formula

1. How is pressure affected as depth increases? 2. As the sun heats the surface of the oceans, two layers of water result. What separates the layers? 3. How is temperature affected when? (a) the depth increases (b) the latitude increases 4.

Are nails in a jar with water a chemical change

What is the molarity of a solution composed of 4.73 g of potassium iodide (KI) dissolved in enough water to make 0.169 L of solution? Answer in units of M.

Suppose you were given a substance and asked to determine whether or not it was a plasma. Write the characteristics you would look for to identify the substance.

What is a comet? tell in a short and easy answer