Chemistry Honors Final Exam Questions and Answers 100% Correct

Chemistry Honors Final Exam Questions and Answers 100% Correct What is chemistry? - Answer- The study of the changes in matter What is analytical chemistry? - Answer- The study of the chemical composition of a new substance What equipment would be used to measure 30.6 mL of a liquid solution? - Answer- Buret Substance vs. Mixture - Answer- Composition a substance cannot vary, but the composition of a mixture can Which of the following is Not a molecule - Answer- If I️ t has more than one element or the one element has a subscript, I️ t is a molecule. If there is only one element such as potassium (K) is is not a molecule separating mixtures? - Answer- Physical means What is a theory? - Answer- A well tested explanation for a broad set of observations Best methods to separate a dissolved solution? - Answer- Distillation Which state of mass can take the shape and volume of its container? - Answer- Gas Products vs. reactants - Answer- Products go in, reactants come out If you scooped too many chemicals, you can put I️ t back where you got it - Answer- False You need teacher guidance before you start a lab - Answer- True You can make up labs anytime you want - Answer- False Students have to periodically test the eye wash - Answer- False Zn + H2SO4 = H2 Mg burns in the air to make MgO - Answer- Chemical Zinc conducts electricity Copper solutions turns blue - Answer- Physical extensive properties - Answer- Volume Mass intensive properties - Answer- Melting point Density Laurie acid melted when put in hot water bath - Answer- Physical change Clear solution added with clear solution mix to produce green precipitate - Answer- Chemical change Grinding chuck of sulfur into powder - Answer- Physical change Is a Twinkie a pure substance or a mixture? - Answer- Mixture, heterogenouse Is H2O a pure substance or a mixture? - Answer- Pure substance, compound Is calcium a pure substance or a mixture? - Answer- Pure substance, element Which group only contains metals? - Answer- 2