Model, A representation that explains, describes, or predicts why something happens., Phenomena, occurrences in the natural and human-made world that can be observed and cause one to wonder and ask questions., Investigation, Process of finding the answer to a question using various research methods., Change, To make different, or alter, in some particular way., Senses, sight, hearing, smell, taste, and touch., Conduct, You direct or take part in carrying it out., Interaction, The direct effect that one thing has on another thing., Weight, Describes the effect of gravity on an object. It is measured by the gram in the metric system and by the ounce and pound in the U.S. system., Digital Scale, Science tool used when measuring weight., Data, Facts, figures, or other pieces of information that can be used to learn about something., Matter, Anything that has mass and takes up space., Substance, The material, or matter, of which something is made., Material, Substances of which something is composed or can be made., Predict, To say or estimate that something will happen based on observation, experience, or scientific reasoning., Pattern, Something that happens or appears in a regular and repeated way., Open system, Freely allows both energy and matter to be transferred in and out of the system., Closed system, Does not allow matter and energy to be transferred in or out of the system., Temperature, The degree of hotness or coldness of an object or a substance., Indicator, Points to, suggests, or shows something., Formed, When something is made or created from something else., Original, The first or earliest; not a copy; real., Physical Change, Any change to the physical properties of matter where the final product is still composed of the original substances., Chemical Change, Takes place when two or more substances are mixed together and an interaction occurs that causes them to change to a new substance., Irreversible Change, Takes place when original substances are changed into a new substance and cannot be changed back to what they were originally., Energy, The power or ability to make something work or be active., Heating, Energy flows from hot objects to cool objects., Transfer, The natural flow of heat from warmer objects to cooler objects., Particles, Tiny bits of matter that make up everything in the universe., Conductors, Materials that allow heat to transfer from one material to another faster., Expand, Particles inside materials move with speed and force, colliding into one another, causing them to spread out.

Matter

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