Chemistry Unit Practice Midterm
Quiz by Joseph Callahan
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35 questions
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- Q1Which of these is a good indicator of a chemical change?color changeBubbling or effervescenceAll of the abovechange in temperature30s
- Q2Which of these indicates a physical change?state or phasegas formingeffervescence or bubblingnone of these30s
- Q3What has a variable shape and a definite volume?gasliquidsolidplasma30s
- Q4Which of these is a chemical property?reactivity and flammabilitymalleabilityductilityliquid to solid phase change30s
- Q5Which of these is a mixture?table saltwatersalad30s
- Q6Which of these is a compound or new substance?saladhydrogencarbonwater30s
- Q7Which of these is a solution?hot cocoawatercarbonoxygen30s
- Q8What is the smallest unit of a compound?solutionmixtureatommolecule30s
- Q9What type of property is density?D = m/vphysicalchemicalphase30s
- Q10What type of mixture is chocolate chip ice cream?homogeneoussaturated solutionionicheterogeneous30s
- Q11A compound can be defined assubstance composed of two or more elements physically combinedsubstance composed of two or more elements chemically combinedthe smallest particle of an elementthe same as mixtures30s
- Q12The smallest particle of an elementall of the abovemoleculemixtureatom30s
- Q13Which of the following is an example of a compound?NaCl--table saltAll of the aboveH20--waterCH4--methane30s
- Q14In a mixture there is no chemical change becausethe substances are both metalsthe substances retain their separate identities or separate propertiesnone of the abovethe substances bond and new material is formed30s
- Q15What instrument do we use to calculate mass?meter stickrulerscalegraduated cylinder30s