Final Review
Quiz by Demetris Riddles
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40 questions
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- Q1Which characteristic distinguishes a molecule from an atom?Molecules are bonded togetherMolecules are the smallest unit of a pure substanceMolecules are positiveMolecules are composed of subatomic particles30s
- Q2The students mixed vinegar and baking soda and bubbles formed and producing a gas. If they measured the mass of the substance at the beginning and had 20g, what would be the mass after the chemical reaction?Less than they had initially because the gas left the flask similar to evaporationMore than they had initially because the gas would stay in the flask30s
- Q3Which of the following best describes a chemical change?Liquid EvaporatedLiquid remained clearBubbling and fizzing30s
- Q4Sarah has two glasses, filled with water and adds 1 ice cube to each glass. In the first glass, the ice cube sunk and in the second glass, floated. What best describes the conclusion?Higher densities will float on top of lower density solutionsLow densities will float on top of higher density solutions30s
- Q5You mix two solutions together and your left with a solid white substance after all the liquid is gone. What best describes the original substance?Mixture that went through a physical changeMixture that went through a chemical change30s
- Q6What are the properties of Ca, BA and Li?They are metalsThey are metalloids30s
- Q7Sugar and Sand is what type of Mixture:Heterogeneous MixtureHomogeneous Mixture30s
- Q8Sugar and water is what type of mixture:Homogeneous MixtureHeterogeneous Mixture30s
- Q9Rusting is similar to which type of reaction?Melting Ice CreamBurning WoodBreaking a bat30s
- Q10As you go from the bottom to the top of the states of matter diagram, what happens to the motion of particles?They speed up and energy is addedThey slow down and energy is removed30s
- Q11Which state of matter has particles that are tightly packed and moves the slowest?SolidLiquid30s
- Q12Which state of matter shows particles that slide past one another?SolidLiquid30s
- Q13Which is a chemical property of matter?DensityReactivityMelting30s
- Q14Increasing the temperature causes:A physical change and particles speed upA Chemical change and particles slow down30s
- Q15Which is a not physical property of matter?It made sparks when droppedIt turned BlueHas a mass of 23g30s