Matter must have two physical properties. 1. have mass, and a. take up space, or b. use energy

1 How do the charge and mass ok a neutron compare to the chargu and ways or a proton?

Explain why living things can be considered a renewable recourse

Mention three effects of air pollution and suggest the ways to prevent it

Which two elements make up water? oxygen and phosphorus oxygen and hydrogen hydrogen and sulfur hydrogen and phosphorus

elements on the right side of the periodic table differ from the elements on the left side in that elements on the right side

What happens to an isotopes during radioactive

Why does the effective nuclear charge increase across a row of the periodic table?

Iodine-131 decays to form xenon-131. the half-life of this reaction is 8.07 days. from a 200-g sample of iodine-131, how much of the sample is xenon-131 after 16.14 days?

Complete the following statement by checking all that apply Creativity allows scientists to develop multiple approaches to solving problems. adapt to changes in scientific knowledge. look at old problems in new ways.

The atomic weight of hydrogen is 1.00794. a. True b. False