'1 compound' diaporamas de présentation

Mini Review: What substances are made of

Mini Review: What substances are made of. Single Atom, Element, Molecule, Compound, Pure Substance and Mixture. What is this?. Use your signs to answer each question. Then write the chemical formula on your paper. Sodium (Na). Hydrogen (H). Potassium (K). Helium (He). Carbon (C).

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Chemical Reactions

Chemical Reactions. Ch.21 Sec.1. Chemical Reactions. Occurs with chemical changes Make new substances Change in which one or more substances are converted into new substances. Signs of Chemical Reactions. Change in color Release of light, heat, gas, sound, or smell.

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Classification of Matter

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#5 Smallest part of an element

#5 Smallest part of an element. Define what an element is Elements are made up of atoms that all share the same physical and chemical properties. The atoms are then made up of subatomic particles called protons (+), neutrons (0 charge), and electrons (-). #9 Subscripts say?.

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