changes to matter scope

What is a physical change?

• A change in the form or appearance of a substance without changing its chemical composition.

• A change that alters the chemical structure of a substance.

• A process that results in the formation of a new substance.

• A change that occurs only at high temperatures.

What is an example of a chemical change?

• Burning wood is an example of a chemical change.

• Melting ice is an example of a chemical change.

• Boiling water is an example of a chemical change.

• Dissolving sugar in water is an example of a chemical change.

What is the definition of temperature?

• Temperature is a measure of how hot or cold something is, often measured in degrees Celsius or Fahrenheit.

• Temperature is the amount of heat energy in an object.

• Temperature is the speed at which particles move in a substance.

• Temperature is a measure of the pressure exerted by a gas.

What is the difference between mass and weight?

• Mass is the amount of matter in an object, while weight is the force of gravity acting on that mass.

• Mass is the force of gravity acting on an object, while weight is the amount of matter in that object.

• Mass and weight are the same; they both refer to the amount of matter in an object.

• Weight is a measure of an object's volume, while mass is a measure of its density.

What does it mean for mass to be conserved?

• Mass can be created or destroyed in a closed system.

• Mass remains constant in a closed system, meaning it cannot be created or destroyed.

• Mass can change forms but is never lost.

• Mass is only conserved in open systems.

What is the mass of an object?

• The mass of an object is the amount of matter it contains, usually measured in grams or kilograms.

• The mass of an object is its weight in a vacuum.

• The mass of an object is the volume it occupies.

• The mass of an object is the speed at which it moves.

What is the freezing point of water?

• 0 degrees Celsius (32 degrees Fahrenheit)

• 100 degrees Celsius (212 degrees Fahrenheit)

• 32 degrees Celsius (89.6 degrees Fahrenheit)

• -10 degrees Celsius (14 degrees Fahrenheit)

What is the boiling point of water?

• 90 degrees Celsius (194 degrees Fahrenheit)

• 100 degrees Celsius (212 degrees Fahrenheit)

• 110 degrees Celsius (230 degrees Fahrenheit)

• 80 degrees Celsius (176 degrees Fahrenheit)

How does temperature affect the state of matter?

• Increasing temperature causes solids to melt into liquids and liquids to evaporate into gases.

• Temperature has no effect on the state of matter.

• Increasing temperature causes gases to condense into liquids and liquids to freeze into solids.

• Temperature only affects the color of matter, not its state.

What happens to the mass of an object when it changes states (solid, liquid, gas)?

• The mass of an object increases when it changes states.

• The mass of an object decreases when it changes states.

• The mass of an object remains the same when it changes states.

• The mass of an object becomes negligible when it changes states.