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How Matter Changes

Houghton Mifflin Science chapter 13 review - Grade 4

Vocabulary wordDefinition
matter Anything that has mass and takes up space
mixture matter that is made of two or more substances that are physically combined
solution a mixture in which particles are evenly mixed
product newly formed matter from a chemical reaction
reactant the matter you start with in a chemical reaction
heat the flow of thermal energy from a warm area to a cooler area
temperature the measure of how hot or cold matter is
thermal energy the total energy of the particles in a substance
physical change a change in the way matter looks without changing it into a new kind of matter
chemical change a change in matter that produces a new kind of matter with different properties
chemical reaction a change in matter that produces a new kind of matter with different properties
dissolve substances that mix completely by separating into particles that can't be seen
physical property a characteristic of matter that can be observed without changing matter into something new
chemical property a characteristic of matter that can only be observed by changing matter into something new
condensation forms when gas cools and changes into a liquid
Created by: jdanowsky
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