Periodic Table | Properties of Matter |
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How do you find the number of neutrons that an atom has?
Atomic mass - atomic number = number of neutrons
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As the temperature rises from 25C to 60C, the material __________(absorbs/releases) heat and its kinetic energy (increases/decreases).
absorbs, increases
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Rows on the periodic table are called ____________, while columns are called _____________
periods, groups
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If heat is released from water, what phase change happens?
It freezes to solid ice
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What do group numbers on the periodic table identify?
Number of valence electrons
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Copper and other metals are often used in making pots and pans to cook in. What property would explain this? Is this property a physical change or a chemical change.
Conductivity - physical change
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The periodic table is organized into vertical groups of _________ (elements/compounds) that have _________ (different/similar) properties
elements, similar
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Luster, hardness, color, size, and temperature are all examples of (physical/chemical) properties.
physical
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Which three particles make up an atom?
Protons, neutrons, and electrons
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A brick is cut into small pieces. Which physical property did not change when the brick was cut: Length, density, shape, or mass?
density
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