What is conserved in physical changes?
The atoms in a sample are close together but can slide past one another. As the atoms lose energy, they move slower. The atoms become locked in place because of attractive forces between them.
What happens to the total mass of a substance undergoing a physical change?
Which best describes what is made of matter?
Chanel has some cotton candy that came in a cloudy shape. She wants to make it more dense. Which describes the candy before and after Chanel manipulated it?
Which example illustrates a chemical change?
Which tools would Sara use to find an irregularly shaped object’s mass and volume?
Which statement summarizes the difference between mass and weight?
Uranium is a type of atom. In special circumstances that usually involve high amounts of energy, uranium can be broken. When this occurs, different pieces of the original atom remain, including a substance called plutonium.Which statement most likely describes plutonium?
Why is matter so diverse in its properties and characteristics?
If a person has the values for an object’s density and volume, what value can be calculated?
Which object would sink in honey, which has a density of 1.4 g/cm³?
When hydrogen peroxide bubbles, it is undergoing a chemical change. Which statement best describes what is happening?
Which statement gives two characteristics of all liquids?
During which changes of state do atoms that cannot move past one another become free to move?
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