Hesi A2 Chemistry Questions and Answers 2023 Mixture with uniform density throughout and no distinguishable coponents. - Correct Answer Homogeneous Mixture Mixture in which the components are readily distinguished. - Correct Answer Heterogeneous Mixture A change in which the checmical composition of a substance remains the same. - Correct Answer Physical Change A change in which the chemical bonds are broken and reformed to create a new and different substance. - Correct Answer Chemical Change The simplest of substances and is represented by a specific letter or combinations of letters. - Correct Answer Element Combinations of eleements in whole number ratios. - Correct Answer Compounds Mass cannot be created or destroyed during a chemical reaction. - Correct Answer Law of Conservation of Mass The breaking of bonds and the reforming of new bonds to create new chemical compounds with different chemical forumulas and different chemical properties. - Correct Answer Chemical Reaction syntehesis, decomposition, combusion, single replacement, double replacement - Correct Answer Five main types of chemical reactions.Two elements combine to form a product. - Correct Answer Syntehsis Reaction The breaking of a compound into component parts. - Correct Answer Decomposition Reaction The reaction of a compound or element with oxygen. In the combusiton of a hydrocarbon carbon dioxide and water are produced. - Correct Answer Combustion Reaction Reaction involoving ionic compounds. The reactivity of the ionic compounds determines whether the reaction will take place or not. Can be single replacement or double replacement reaction. - Correct Answer Replacement Reactions
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