Which of the following breaks and forms bonds?

Physical change

Molecular change

Chemical change

Nuclear change

How are scientific questions answered? O A. By predicting a solution to the question O B. By observing and measuring the physical world O C. By reading books about the question O D. By asking other scientists what they think

If there is no net force acting on an object, the object will a. accelerate b. slow down and stop c. continue with constant speed in a straight line d. change its direction of motion How do i know its correct?

Why is it important to check the conductivity and pH of pure water for comparison

Calculate the number of grams of Fe that are produced when 57 grams of FeO is reacted with excess aluminum in the following reaction: 2Al (s) + 3FeO (s) - > 3Fe (s) + Al₂O₃ (s)

Witch is the best discription of a molecule

What is the mass of a paperclip?

What process is a physical change

For a half-reaction in an acidic solution, which substances should you add to balance the equation? A. H + and H20 B. H + and OH- C. H20 and NO2 D. OH-

What is the molar mass of mgf2

Hydrogen's sole electron occupies the 1s orbital but can be excited to the 4p orbital. List all the orbitals this electron might occupy on its way back to its ground state.