Which would most likely take the longest to dissolve?

• sugar cube in hot water

• sugar cube in cold water

• powdered sugar in hot water

• powdered sugar in cold water

Tags

NGSS.5-PS1-3

A hiker has prepared a trail mix for a hiking trip with different ingredients and amounts shown in the table. If he weighs the mix on a scale what will the most likely reading be? Why?

• The reading will be greater that 840 g because when the ingredients are mixed, new ingredients with different masses are formed.

• The reading will be less than 840 g because when the ingredients are mixes, the particles come closer together, and they occupy less space.

• The reading will be equal to 840 g because when the ingredients are mixed, the particles are rearranged, but their masses remain the same.

• The reading will be equal to 840 g because when the ingredients are mixed, the particles join together to form a new substance with the same properties.

Tags

NGSS.5-PS1-2

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 faster because it has smaller particles.

• Form Y will dissolve faster because it has larger particles

Tags

NGSS.5-PS1-1

Which point on the thermometer represents the temperature at which water will freeze?

• W

• X

• Y

• Z

Tags

NGSS.MS-PS1-4

A chef observes that water in a pot is boiling. What 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 degrees Celsius.

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

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

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

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Under which temperature conditions will ice cubes in a glass bowl begin to melt?

• The temperature of the ice inside the glass bowl is slightly below water's freezing point.

• The temperature of the ice inside the glass bowl is slightly above water's freezing point.

• The temperature of the ice inside the glass bowl is slightly below water's boiling point.

• The temperature of the ice inside the glass bowl is slightly above water's boiling point.

Tags

NGSS.4-PS3-2

A student tests the melting point of an unknown solid. The student observes the solid begin to turn from a solid to a liquid at 32 degrees Fahrenheit. Which of the four pure solids is the unknown solid?

• canola oil

• ice

• table salt

• tin

Tags

NGSS.5-PS1-3

A student prepares two mixtures using different substances. Which mixture has more mass and why?

• Mixture Y; it contains more gravel.

• Mixture Y; the sum of the masses of the substances added is higher.

• Mixture X; it contains more sand that does not dissolve in water.

• Mixture X; the sum of the masses of the substances added is higher.

Tags

NGSS.5-PS1-2

A student melts 350 g of chocolate chips. The student concludes that after melting, there is more chocolate.

Which statement below is CORRECT?

• 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 forma nd 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.5-PS1-2

A chef cuts a larger 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.

Tags

NGSS.5-PS1-2