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- 1. Multiple ChoiceChocolate milk is a substance.TrueFalse
- 2. Multiple ChoiceA KIPPster has two samples of unknowns and wants to find out if they are the same substance or not. Which of the following are both observations that would help the KIPPster determine if they are the same substance?Mass & ShapeColor & Hardnessa. Shape & Colora. Size & Hardness
- 3. Multiple ChoiceWhen a liquid becomes a gas, that process is called ___________________. When a gas becomes a liquid it is called ____________________.Melting; freezingEvaporation; condensationEvaporation; meltingCondensation; evaporation
- 4. Multiple ChoiceA bowling ball has more volume than a beach ball.TrueFalse
- 5. Multiple ChoiceWhen we mixed road salt (white solid) with baking soda (white solid), we observed bubbles and the bag changed temperature. There was also a white solid substance in the bottom of the bag. In this experiment, how could we have tested if the white solid was a new substance?Test the solubility and compare it to the solubility of the starting substancesMeasure the mass and compare it to the mass of the starting substancesMeasure the volume and compare it to the volume of the starting substancesObserve the color and compare it to the color of the starting substances
- 6. Multiple Choice_____________ are characteristics that help identify substances and tell them apartPropertiesQualitiesReactionsMolecules
- 7. Multiple Choice
Which of these are substances?A onlyA and CD and AA and B - 8. Multiple ChoiceWhich of the following is NOT a compound?O2MgOCH4H2O
- 9. Multiple ChoiceWhich of the following is a chemical change?Ice cream meltingWater boilingA cake bakingWhite liquid and red liquid combining to make pink liquid
- 10. Multiple ChoiceA piece of gold has a mass of 40g and a volume of 2 cm3. What is its density?1/20 g/cm380 g/cm320 g/cm340 g/cm3
- 11. Multiple ChoiceWhy is bubbling often a signal that a chemical reaction is occurring?It shows that the temperature is changingIt shows that a new substance (gas) is being formedIt shows that the state of matter is changingIt shows that a substance has reached its boiling point
- 12. Multiple ChoiceWhat are the reactants in this chemical equation?Water and carbon dioxideWater, carbon dioxide, heat and lightpropane and oxygenpropane, oxygen and carbon dioxide
- 13. Multiple ChoiceDoes this image prove the Law of Conservation of Mass?YesNo
- 14. Multiple ChoiceTaylor mixes road salt with baking soda in an open beaker. The mass of the substances before the reaction is 20 g. When the substances are mixed, they react - they form bubbles and the temperature rises. The mass after the reaction is 19 g. Why did the mass decrease?Mass always decreases during a chemical reactionThe mass decreases if a reaction takes place in an open system and one or more products is a gasThe mass increases because a new substance is formedTaylor made a mistake because the mass can never change in a chemical reaction
- 15. Multiple ChoiceBananas turning rotten: chemical change or physical change?Chemical ChangePhysical Change
- 16. Multiple ChoiceDoes this image of water molecules represent boiling or electrolysis?BoilingElectrolysis
- 17. Multiple ChoiceWhich is the correct word equation for the following reaction?
When iron is exposed to air and water over time, a chemical reaction occurs. The iron (Fe) reacts with the oxygen (O2) to form a reddish substance called iron oxide (Fe2O3). You may have seen this on buildings, subway rails, or pipes that are made of iron and are outside!Iron Oxide --> Iron + OxygenIron Oxide + Oxygen --> IronIron + Oxygen --> Iron OxideIron + Iron Oxide --> Oxygen - 18. Multiple ChoiceThe difference between an atom and a molecule is that:Atoms are made of more than one moleculeMolecules are made of two atoms of the same type stuck togetherMolecules are made of more than one atom stuck togetherMolecules are small and atoms are large.
- 19. Multiple ChoiceBased on this chemical equation, for every molecule of calcium chloride used , how many molecules of sodium bicarbonate (baking soda) are used?1462
- 20. Multiple ChoiceWhich is the best an example of an object with a large volume and a low density?A cotton ballA rockA plastic bag full of quartersA pillow
- 21. Multiple Choice
Which of the following shows a physical change of the original substance?
A and C
B and C
A and D
B and D
- Answer choicesTagsAnswer choicesTags