Conservation of matter

What is the term for the change of state from solid to liquid?

• Freezing

• Melting

• Condensation

• Evaporation

Tags

NGSS.MS-PS1-4

What is the process called when a liquid turns into a solid?

• Condensation

• Evaporation

• Freezing

• Sublimation

Tags

NGSS.MS-PS1-4

What is the principle behind balancing chemical equations?

• The number of atoms of each element must be the same on both sides of the equation, reflecting the conservation of matter.

• The total mass of reactants must be greater than the total mass of products.

• Chemical equations can be balanced by changing the chemical formulas of the reactants.

• Balancing chemical equations is not necessary for reactions to occur.

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

If 15 grams of sugar are dissolved in 300 grams of water, what is the total mass of the mixture?

• 310 grams

• 315 grams

• 320 grams

• 305 grams

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is the term for the change of state from liquid to solid?

• Melting

• Freezing

• Evaporating

• Condensing

Tags

NGSS.MS-PS1-4

What is the term for the change of state from liquid to gas?

• Condensation

• Evaporation

• Sublimation

• Precipitation

Tags

NGSS.MS-PS1-4

What is the term for the change of state from gas to liquid?

• Evaporation

• Condensation

• Sublimation

• Precipitation

Tags

NGSS.MS-PS1-4

What is evaporation?

• Evaporation is the process by which a liquid changes into a gas.

• Evaporation is the process of a gas turning into a liquid.

• Evaporation is the process of a solid turning into a liquid.

• Evaporation is the process of a liquid freezing into a solid.

Tags

NGSS.MS-ESS2-4

NGSS.MS-PS1-4

What happens to the mass of a substance when it changes from a solid to a liquid?

• The mass increases.

• The mass decreases.

• The mass stays the same.

• The mass becomes negligible.

When ice melts, what happens to its weight?

• The weight of the water is less than the weight of the ice.

• The weight of the water remains the same as the weight of the ice.

• The weight of the water is greater than the weight of the ice.

• The weight of the water becomes zero.

Tags

NGSS.MS-PS1-4