Is spreading butter on bread a chemical change

When light energy hits matter what energy is formed?

If the atomic number for oxygen is 8, how many protons are in the nucleus of each of its atoms? SC. 8. P. 8.6

The reactivity of an alkali metal depends on the metal's ability to what electrons.

11. Contrast the following: • Mixture: • Compound: • Element:

Which activity involves a product made from petroleum jelly a.) eating fresh fruit for a snack b.) walking to school c.) see you cooking hotdogs on a campfire d.) using crayons to color

What kingdom is humans in!

Propane (C3H8) has a molar mass of 132 g/mole. You started out the day with a tank containing 9071 g of propane. At the end of the day, your tank contained 7532 g of propane gas. How many moles of gas did you use?

Why decomposition of ammonium nitrate is a redox reaction?

Two formulas for compounds containing hydrogen and oxygen are H2O and H2O2. Do these formulas represent the same compound? Explain.

My dog made become frightened and cover when he hears loud thunder this is an example of a reaction to What kind of stimuli A. chemicals B. light C. touch D. sound