Why do some chemical reactions occur?

Describe how molecules form from individual elements. How and why can we predict which molecules will form?

A person in a head-on car crash collision, who is not wearing a seat belt, continues to move forward at the original speed of the car because of what?

The graph shows a student's data from an investigation about plant growth in five plants of the same type. Which is the best way to display this data for analysis?

dentify the missing information for each atom or ion. Note that the atoms and ions are not necessarily neutral. A Se ion has a mass number of 78 and a charge of - 2. Determine the number of neutrons, protons, and electrons in this ion.

How do you make clorifil?

In the following diagram the counter clockwise torque is?

A water wave travels 36 meters in 15 seconds. whatvis the speed of water?

Which type of wave cannot move without a medium in which to travel? Heat waves Light waves Sound waves Transverse waves

Which describes the burning of fossil

The flow of energy in an ecosystem is the best described as energy moving in