IAR Prep

In Experiments 1 and 2, the probe that was placed in the sample solution most likely did which of the following?

• Cooled the solution to its freezing point

• Heated the solution to its boiling point

• Detected the concentration of nitrazine yellow in the solution

• Passed an electrical current through a portion of the solution

Tags

NGSS.MS-PS1-2

A chemist claimed that in Experiment 2, the pH of the sample solution was greater at a value of 0.2 mL of titrant added than at a value of 1.8 mL of titrant added. Do the results of Experiment 2 support this claim?

• No; at a value of 0.2 mL of titrant added, the sample solution was yellow, and at a value of 1.8 mL of titrant added, the sample solution was blue.

• No; at a value of 0.2 mL of titrant added, the sample solution was blue, and at a value of 1.8 mL of titrant added, the sample solution was yellow.

• Yes; at a value of 0.2 mL of titrant added, the sample solution was yellow, and at a value of 1.8 mL of titrant added, the sample solution was blue.

• Yes; at a value of 0.2 mL of titrant added, the sample solution was blue, and at a value of 1.8 mL of titrant added, the sample solution was yellow.

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Tags

NGSS.MS-PS1-2

Based on Student 2's discussion, Algol B is part of the present Algol system because of which of the following forces exerted on Algol B by the original Algol system?

• Electric force

• Magnetic force

• Gravitational force

• Nuclear force

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Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

NGSS.MS-PS2-5

Based on Student 1’s discussion and Fact 4, while matter flowed between Algol A and Algol B, Algol B produced the majority of its energy by fusing:

• hydrogen nuclei to make helium nuclei at its center.

• hydrogen nuclei to make helium nuclei in a shell surrounding its center.

• helium nuclei to make hydrogen nuclei at its center.

• helium nuclei to make hydrogen nuclei in a shell surrounding its center.

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Tags

NGSS.MS-PS1-1

What is the chemical formula for water?

Tags

NGSS.MS-PS1-1

Which of the following is a renewable energy source?

• Coal

• Natural Gas

• Solar Energy

• Nuclear Energy

What is the acceleration due to gravity on Earth?

Which organelle is known as the powerhouse of the cell?

• Nucleus

• Mitochondria

• Ribosome

• Endoplasmic Reticulum

Tags

NGSS.MS-LS1-2

What is the process by which plants make their food using sunlight?

• Respiration

• Photosynthesis

• Transpiration

• Digestion

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which gas is most abundant in the Earth's atmosphere?

• Oxygen

• Carbon Dioxide

• Nitrogen

• Hydrogen