Spring Case 21 Review

A chef observes that water in a pot is boiling. What 2 options can the chef infer about the water and the water's temperature?

• The water is changing from a liquid to a solid, and the temperature of the water inside the pot is 0°C.

• The water is changing from a liquid to a solid, and the temperature of the water inside the pot is 32°C.

• The water is changing from a liquid to a gas, and the temperature of the water inside the pot is 100°C.

• The water is changing from a liquid to a gas, and the temperature of the water inside the pot is 212°C.

Tags

NGSS.MS-PS1-4

How can a student measure the volume of a gas that is in a sealed container?

• Record how fast the gas escapes the container.

• Record how much liquid fills an identical container.

• Place the sealed container on a scale.

• Place the sealed container on a hot plate.

Which two temperature points have the same value for water?

• boiling point

• freezing point

• gas point

• liquid point

• melting point

When two substances react to form a new substance, what is true about the new substance?

• The mass of the new substance is equal to the mass of each starting substance added together.

• The mass of the new substance is less than the mass of each starting substance added together.

• The mass of the new substance is equal to the mass of the largest starting substance.

• The mass of the new substance is less than the mass of the smallest starting substance.

Tags

NGSS.MS-PS1-5

A student melts 350 g of chocolate chips. The student concludes that after melting, there is more chocolate. Which statement correctly analyzes the student’s conclusion?

• The student’s conclusion is correct because heat causes more chocolate to form.

• The student’s conclusion is incorrect because the mass of the chocolate chips is less in solid form and greater in liquid form.

• The student’s conclusion is correct because the volume of the chocolate chips increases.

• The student’s conclusion is incorrect because the mass of the melted chocolate chips is the same as the mass of the solid chocolate chips.

Tags

NGSS.MS-PS1-4

A student adds 70 g of water to a beaker with a mass of 115 g. She also adds a specific amount of sugar to the beaker. She then mixes the contents in the beaker and measures the mass of the beaker on a scale. The beaker has a mass of 210 g. What is the mass of the sugar added to the beaker?

• 25 g

• 95 g

• 140 g

• 210 g

A chef cuts a large pizza into eight equal slices before serving the pizza to customers. Which statement about the sliced pizza is true?

• The sliced pizza weighs more than the unsliced pizza.

• The sliced pizza weighs less than the unsliced pizza.

• The unsliced pizza weighs the same as the sliced pizza.

• The unsliced pizza has a weight equal to zero.

Which statement is correct about mixtures?

• Mixtures formed with water can always be separated by condensation.

• The properties of the components of a mixture change after mixing.

• When substances are mixed, the mixture forms a new substance.

• The properties of the components of a mixture remain the same.

A student conducts an investigation on dissolving juice mix powder in water and records the results in a table. The student conducts a second trial and notices that the juice mix dissolves at a slower rate compared to Trial 1. Which conditions does the student most likely use in the second trial?

• A) Amount of Water (g): 160, Amount of Juice Mix (g): 30, Mixture Stirred?: no, Temperature of Water (°C): 67

• B) Amount of Water (g): 160, Amount of Juice Mix (g): 40, Mixture Stirred?: yes, Temperature of Water (°C): 67

• C) Amount of Water (g): 160, Amount of Juice Mix (g): 30, Mixture Stirred?: yes, Temperature of Water (°C): 73

• D) Amount of Water (g): 160, Amount of Juice Mix (g): 40, Mixture Stirred?: no, Temperature of Water (°C): 22

Tags

NGSS.MS-PS1-2

Examine the diagram of a substance in two different forms (X and Y). Which statement best describes the rate of dissolving for the substance?

• Form X will dissolve faster because it has larger particles.

• Form Y will dissolve faster because it has smaller particles.

• Form X will dissolve slower because it has smaller particles.

• Form Y will dissolve slower because it has larger particles.

Tags

NGSS.MS-PS1-2