Quiz

Explain why

Ice melts by heating

Which form of fossils can preserve the internal structures of an organism?

What is physical weathering? How do trees break down solid rock? What causes the most common type of physical weathering? What percent does water expand? How does water break apart a rock? Answer All These Questions

Read the two questions. Question 1: Should acid precipitation be a concern for the new age environmentalist? Question 2: Does acid precipitation in forests affect the reproduction rate in birds?

Good chemistry question

Which element is reduced in this reaction? 2cr (oh) 3+3ocl-+4oh-→2cro4-2+3cl-+5h2o enter the chemical symbol of the element?

When does a spring tide take place? At the beginning of spring Only during the spring season Only after spring is over At any time

The highest cloud are known as

What is the mass of 4.85 X 10^22 atoms of iron (Fe) ?

If element x has 95 protons how many electrons does it have

Which of the following when dissolved in deionized water would make a good conducting solution? a) methanolb) sugarc) baking soda