Which of the following best describes a solid?

• It has a definite shape and volume, with particles closely packed together.

• It has no definite shape but has a definite volume, with particles that move freely.

• It expands to fill any container, with particles far apart and moving freely.

• It has a definite volume but takes the shape of its container, with particles that can move.

A liquid:

• Has a definite shape and volume.

• Has no definite shape and expands to fill any container.

• Has a definite volume but no definite shape, taking the shape of its container.

• Has a definite shape but no definite volume.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is true about the particles in a gas?

• They are closely packed together in a regular pattern.

• They can move but are still close together.

• They are far apart and move freely.

• They vibrate in fixed positions.

Which scenario best illustrates the concept of mass?

• A balloon filled with air taking the shape of its container.

• A rock weighing 2 kilograms regardless of where it is located.

• Water expanding to fill a container.

• A solid turning into a liquid when heated.

Volume is a measure of:

• The amount of space an object occupies.

• The weight of an object.

• The density of an object.

• The amount of matter in an object.

Which of the following scenarios involves a change in volume?

• Compressing a gas into a smaller container.

• Weighing a piece of metal.

• Measuring the mass of a liquid.

• Cooling a solid to decrease its temperature.

Density can be calculated using the formula:

• Density = Mass × Volume

• Density = Mass / Volume

• Density = Volume / Mass

• Density = Mass + Volume

Which substance is likely to sink in water, given that the density of water is 1 g/cm³?

• A substance with a density of 0.8 g/cm³

• A substance with a density of 1.2 g/cm³

• A substance with a density of 1 g/cm³

• A substance with a density of 0.5 g/cm³

Which separation technique would you use to separate sand from water?

• Evaporation

• Filtration

• Sifting

• Distillation

In which scenario is evaporation used as a separation technique?

• Separating sand from water using a filter.

• Separating salt from seawater by heating the water until it turns into vapor.

• Separating larger particles from smaller ones using a sieve.

• Separating a mixture of liquids with different boiling points.

Tags

NGSS.MS-PS1-4