Why do lunar and solar eclipse not happen every two months?

If the relative activities of two metals are known which metal is more easily oxidized

A teacher rubbed a match against a piece of sandpaper. The match started to burn. Describe the energy transformation of the teacher rubbing the match on the sandpaper.

What's NaOH+H2SO4 to NA2SO4+H2O balanced

Celine has a bottle that contains 20% of milk and the rest water. The bottle has 1 liter of water. Write an equation in one variable that can be used to find the total number of liters of milk and water in the bottle.

What is the chemical characteristics of the compound barium oxide?

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

Some elements are solids at room temperature true or false

What is the most expensive element?

Constance is making a vegetable soup that contains carrots, beans, water, salt, pepper, bits of ham, and onions. the soup has to cook for 4 hours. while the soup is cooking, what will happen to some of the minerals that are in its ingredients?