Water is made of two hydrogen atoms and one oxygen atom bonded together. Julia is describing how water undergoes a physical change when it boils. She says that the particles shift to be farther apart and that the oxygen and hydrogen separate. She also says that the total mass of the steam is the same as the initial water, and that heat energy was required to cause the change. She finishes her description by saying that the steam can be turned back into water if it is cooled.Which is the mistake in her description?
A soft, silvery-white metal combines with a yellow gas to form a white crystal-like solid. What can be said about this change?
Eugene describes the physical property of a material as “sweet and floral.” What physical property of the material is Eugene most likely observing?
What is an example of a physical change?
Liquid plastic is frozen in a physical change that increases its volume. What can be known about the plastic after the change?
Which is the property of matter in which a substance can transfer heat or electricity?
What happens when a substance undergoes a physical change?
If there is 8 g of a substance before a physical change, how much will there be afterwards?
Which statement best compares and contrasts two physical properties of matter?
Which scenario is an example of a physical change?
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