Which scenario best describes a chemical change?

A. water conducting electricity

B. copper pipe being cut into pieces

C. copper corroding in the presence of oxygen

D. water freezing into ice

Convert 200 kelvin to Fahrenheit

How would the experiment have compared if twice the mass of zinc were used

All of the following are good conductor's of heat except

Scientists use the __ temperature scale for measuring extremely cold and hot temperatures.

Define a compound and give an example

Boron has an average mass of 10.81. One isotope of boron has a mass of 10.012938 and a relative abundance of 19.80 percent. The other isotope has a relative abundance of 80.20 percent. What is the mass of the two isotopes?

What type of radiation is most likely to damage DNA? A. ionizing B. non-ionizing

Water vapor cools and comes together to form a cloud. This is an example of what change in state? condensation evaporation melting

Which group of the periodic table does this element most likely belong to

What is the ph of a 7.5*10^-3 m H + solution