8.5 Degrees

Jesus was conducting an experiment in science class. He took a flask and measured 50ml of vinegar into it. He then measured 10g of baking soda into a balloon and attached the balloon to the flask, covering the mouth of the flask completely. Next, he puts the flask with the balloon attached on a triple beam balance and finds the total pre-reaction mass of his experiment. Finally, leaving the flask/balloon set up on the balance, he lifts the balloon and mixes the chemicals.. How should the total mass be affected by the chemical reaction?

• The total mass will become heavier because the reaction is making a new substance, so the flask will sink on the balance.

• The total mass will become lighter since one of the products is a gas, so the flask will rise on the balance.

• The total mass will become lighter since the reactants are being used up, so the flask will rise on the balance.

• The total mass will stay the same since mass is neither created nor destroyed by a chemical reaction, so the balance will remain level.

Tags

NGSS.HS-PS1-7

Marie had a beaker with a small amount of baking soda. She added a few drops of pickle juice to the baking soda and observed fizzing and bubbling. Based on her observation, which of these can Marie determine about the new substance formed by mixing the baking soda and pickle juice?

• chemical reaction produced a solid.

• chemical reaction produced a gas.

• No chemical reaction took place.

• Only a physical change happened.

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NGSS.MS-PS1-2

How many atoms in all are found in the compound above?

• 3

• 4

• 5

• 6

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NGSS.MS-PS1-1

What is the significance of 8.5 degrees in the context of Earth's axial tilt?

• It is the current axial tilt of Earth.

• It is the change in axial tilt over a century.

• It is the angle of precession of Earth's axis.

• It is the average deviation from the mean axial tilt.

In a scientific experiment, a temperature change of 8.5 degrees Celsius is observed. What could this indicate about the reaction?

• The reaction is exothermic.

• The reaction is endothermic.

• The reaction is at equilibrium.

• The reaction is non-spontaneous.

Tags

NGSS.HS-PS1-5

How does an increase of 8.5 degrees in ocean temperature affect marine life?

• It causes coral bleaching.

• It increases fish population.

• It decreases algae growth.

• It stabilizes marine ecosystems.

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NGSS.HS-LS2-6

NGSS.HS-LS4-5

What is the effect of an 8.5-degree increase in temperature on the solubility of gases in water?

• Solubility increases.

• Solubility decreases.

• Solubility remains constant.

• Solubility fluctuates unpredictably.

If a scientist measures an angle of 8.5 degrees in a diffraction experiment, what does this angle represent?

• The angle of incidence.

• The angle of refraction.

• The angle of diffraction.

• The angle of reflection.

In climate science, what does an 8.5-degree increase in global temperature signify?

• A minor climate variation.

• A significant climate change.

• A negligible impact on weather.

• A temporary weather anomaly.

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NGSS.HS-ESS3-5

What is the impact of an 8.5-degree tilt in a solar panel's angle on its efficiency?

• Increases efficiency.

• Decreases efficiency.

• No impact on efficiency.

• Causes efficiency to fluctuate.

Tags

NGSS.HS-PS3-3