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Science Quiz for Grade 7
Quiz by Joy Vasallo
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30 questions
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- Q1Which of the following is an example of a pure substance?AirGoldSandSaltwater30s
- Q2Which of the following is an example of a chemical change?Cutting paperBurning woodMelting iceMixing salt and water30s
- Q3Which of the following is an example of a physical change?Cooking an eggDigesting foodMelting iceBurning wood30s
- Q4Which of the following is an example of a heterogeneous mixture?MilkOrange juiceTrail mixChocolate pudding30s
- Q5Which of the following is an example of a physical property of matter?ReactivityDensityToxicityFlammability30s
- Q6Which of the following is an example of a chemical property of matter?RustingMeltingBoilingFreezing30s
- Q7Which of the following is a characteristic of a gas?The ability to expand and fill any containerA fixed shapeA fixed volumeHigh density30s
- Q8Which of the following is a characteristic of a solid?Definite shape and volumeAbility to flow and fill any containerLow densityEasily compressible30s
- Q9Which of the following is an example of a physical property of matter?ToxicityFlammabilityDensityCorrosiveness30s
- Q10What is the formula for calculating density?Density = mass × volumeDensity = volume/massDensity = mass/volumeDensity = mass - volume30s
- Q11What is the basic unit of matter?ElementAtomCompoundMolecule30s
- Q12Which of the following is an example of a scientific investigation?Playing a game of basketball with friendsConducting an experiment to test the effects of different fertilizers on plant growthCooking a new recipe for dinnerDesigning a poster for a school project30s
- Q13What is the purpose of a control group in a scientific investigation?To determine the conclusionTo provide a baseline for comparisonTo collect qualitative dataTo manipulate the independent variable30s
- Q14What is the dependent variable in a scientific investigation?The variable that is controlledThe variable that remains constantThe variable that is manipulatedThe variable that is measured or observed30s
- Q15Which of the following is an example of a qualitative observation in a scientific investigation?Describing the color and texture of a leafCounting the number of bacteria coloniesMeasuring the weight of a rockRecording the temperature of water30s