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Which is the best example of a pure substance?
its temperature and pH
gases were released into the atmosphere
The molecules will begin to move faster
increasing atomic number from left to right
producing energy using hydroelectric plants
They contain evidence showing changes in the atmospheric composition over time
gold
biomass
Which best explains why the total mass of the product(s) would be less than the total weight of the reactant(s) after a chemical reaction?
its temperature and pH
gases were released into the atmosphere
The molecules will begin to move faster
increasing atomic number from left to right
producing energy using hydroelectric plants
They contain evidence showing changes in the atmospheric composition over time
gold
biomass
Which best determines the health of a lake used as a source of freshwater?
its temperature and pH
gases were released into the atmosphere
The molecules will begin to move faster
increasing atomic number from left to right
producing energy using hydroelectric plants
They contain evidence showing changes in the atmospheric composition over time
gold
biomass
Which would least likely have an impact on global climate changes?
its temperature and pH
gases were released into the atmosphere
The molecules will begin to move faster
increasing atomic number from left to right
producing energy using hydroelectric plants
They contain evidence showing changes in the atmospheric composition over time
gold
biomass
Which statement best explains how periods on the periodic table are organized?
its temperature and pH
gases were released into the atmosphere
The molecules will begin to move faster
increasing atomic number from left to right
producing energy using hydroelectric plants
They contain evidence showing changes in the atmospheric composition over time
gold
biomass
What happens to the molecules of an ice cube that is placed in a heated pan?
its temperature and pH
gases were released into the atmosphere
The molecules will begin to move faster
increasing atomic number from left to right
producing energy using hydroelectric plants
They contain evidence showing changes in the atmospheric composition over time
gold
biomass
Which is an example of a renewable energy resource?
its temperature and pH
gases were released into the atmosphere
The molecules will begin to move faster
increasing atomic number from left to right
producing energy using hydroelectric plants
They contain evidence showing changes in the atmospheric composition over time
gold
biomass
Which best describes how ice cores are important to the study of geologic history?
its temperature and pH
gases were released into the atmosphere
The molecules will begin to move faster
increasing atomic number from left to right
producing energy using hydroelectric plants
They contain evidence showing changes in the atmospheric composition over time
gold
biomass
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