Which of these is a chemical change

a / fire works eploding

b/grinding powder

c/iorning shirt

In which situation would the gravitational potential energy between you and earth be the greatest. A. you are running down a hill B. you are running up a hill C. you stand at the bottom of a hill S. you stand at the top of the hill

Why do elements that have positive ions occur on the left side of the periodic table?

What is the difference between the development patterns of a chicken and a monkey? A) A monkey develops gill arches while a chicken does not. B) A monkey develops a notochord while a chicken does not.

What is a definition of pressure?

What is the charge of Fe?

What happens when the threat of exposure to dirty air is reduced in a community? There is enough oxygen available for people's lungs to function normally The amount of indoor air pollutants released during a fossil fuel burn decreases There is a

Is chicken noodle soup an element, a compound, a homogeneous mixture, or a heterogeneous mixture?

How is the amount of sunlight affect the makeup of an ecosystem

How many moles are in 65 g of carbon dioxide (CO2) ?

kilograms represented by the mass defect for thorium - 234=3.09x 10-27 kg what is the nuclear binding energy for thorium - 234