Which of the following is not a potential sign of chemical change?

a. release of gas

c. change of color

b. evaporation of water

d. production of gas

What happens to water when it changes to ice? Its density increases. @ its density decreases. Its mass increases. Its mass decreases. Its volume increases. Its volume decreases. Reset Next

You find a rock that contains equal amounts of potassium-40 and argon-40. how old is it?

What are the numbers of orbitals in sublevel of s?

What is the unit for liquid density

A group of scientists have obtained some experimental results. How would the group best find out whether their study is worth more time and resources?

What is the voltage of a galvanic cell made with magnesium and gold

What are the two measurement systems the thermometer uses? Which one is most commonly used for science? Why?

Which term represents the sum of the atomic masses of the atom in a molecule?

How many hydrogen atoms are present in 0.70 moles of ptcl2 (nh3) 2?

What is the [H3O+] of a solution with a pH of 2.56? 2.56 M, 2.75 x 10-3 M, 363 M, or - 0.408 M