Review 1.5

A sealed container of gas is compressed. Apply Boyle's Law to explain particle collisions and predict what happens if released?

• pressure drops and volume expands quickly

• pressure stays constant and volume expands

• pressure rises further while volume shrinks

• temperature decreases causing contraction

A balloon expands when heated. Use Charles' Law to explain why this happens and predict what occurs when cooled.

• temperature decreases, so volume increases

• temperature increases, so volume increases

• pressure decreases while volume remains constant

• volume decreases regardless of temperature

Tags

NGSS.MS-PS1-4

A football left outside on a cold day shrinks. Using Charles' Law, explain why this happens. Then, compare this situation to another real-world example of gases expanding or contracting with temperature (such as a hot-air balloon or a car tire). Justify how the law applies in both cases.

• only the football shows Charles' Law; other examples are unrelated

• both the football and other examples expand or contract with temperature changes due to Charles' Law

• footballs shrink because of Boyle's Law, while balloons expand because of Dalton's Law

• footballs and tires do not actually change in volume with temperature

Tags

NGSS.MS-PS2-2

Gas is heated in a rigid container where volume cannot change. Explain what happens to pressure using Gay-Lussac's Law.

• pressure inceases

• pressure decreases

• pressure stays constant

• volume increases

Railroad tracks expand in the summer heat. Predict what would happen without expansion gaps.

• with gaps the tracks nothing will happen

• without gaps, tracks would buckle from thermal expansion

• with gaps the tracks would buckle

• without gaps nothing will happen

Lithium has atomic number 3 and mass 7. Calculate protons, neutrons, and electrons.

• 3 protons, 3 electrons, 4 neutrons

• 3 protons, 4 electrons, 3 neutrons

• 7 protons, 3 electrons, 4 neutrons

• 4 protons, 3 electrons, 3 neutrons

Tags

NGSS.MS-PS1-1

Iron has atomic number 26 and mass 56. How many protons, neutrons, and electrons does it have?

• 26 protons, 26 neutrons, 26 electrons

• 26 protons, 30 neutrons, 26 neutrons

• 56 protons, 26 neutrons, 26 electrons

• 30 protons, 26 neutrons, 26 electrons

Tags

NGSS.MS-PS1-1

Bromine has atomic number 35 and mass 80. Calculate protons, electrons, and neutrons.

• 35 protons, 35 electrons, 45 neutrons

• 35 protons, 35 electrons, 80 neutrons

• 80 protons, 80 electrons, 35 neutrons

• 45 protons, 35 electrons, 35 neutrons

Tags

NGSS.MS-PS1-1

A Bohr model show 19 protons, 20 neutrons, 19 electrons. Which element is represented?

• Potassium, 1 valence electron

• Calcium, 2 valence electrons

• Sodium, 1 valence electron

• Argon, 8 valence electrons

Tags

NGSS.MS-PS1-1

A Bohr model shows 6 protons, 6 neutrons, 6 electrons. Which element is this?

• Carbon, 4 valence electrons

• Oxygen, 6 valence electrons

• Nitrogen, 5 valence electrons

• Hydrogen, 1 valence electron

Tags

NGSS.MS-PS1-1