Is wood turning into smoke and ash a chemical change or physical change

Why does water spread out in a puddle evaporate over a period of time even though the outside temperature is well below 100 ° F?

How does nuclear energy work?

A statue is made up of a material that has a density 6 g/mL and a mass of 1,668 g. What is its volume?

How many milliliters of 12.0 M hydrochloric acid contain 3.646 g of HCl (36.46 g/mol) ? Group of answer choices

Which of the mayor types of fossils do not form in sediments? Describe how this type can form.

What should I do for the science fair?

Which compounds yield hydrogen ions as the only positive ions in an aqueous solution? (1) H2CO3 and HC2H3O2 (2) H2CO3 and NaHCO3 (3) NH3 and HC2H3O2 (4) NH3 and NaHCO3

4. How does the kinetic theory of gases explain the weather changes happening in the troposphere? You can also research on the Internet using keywords such as troposphere, atmospheric layers, and weather changes.

Is the earth older than any of they rock layers

What will be the charge of sulfur