SPS6B

Ladasha placed a marshmallow in a syringe for science class when she pulled the plunger out increasing the volume in the syringe the marshmallow expanded. How can this best be explained?

• As the pressure decreased in the syringe the volume of the marshmallow increased.

• As the pressure increased in the syringe the volume of the marshmallow increased.

• As the pressure decreased in the syringe the volume of the marshmallow decreased.

• As the pressure increased in the syringe the volume of the marshmallow decreased.

If you slow the motion of water molecules down, they are more likely to become

• a gas.

• hotter.

• colder.

• absorbed.

Tags

NGSS.MS-PS1-4

The molecules that make up a plastic two-liter bottle

• are in constant, rapid, random motion.

• have a volume of more than two liters if melted.

• expand to take the shape of wherever the bottle is placed.

• are closer together than the molecules of soda that they contain.

Tags

NGSS.MS-PS1-4

The most abundant state of matter in the universe is also the state with the most kinetic energy. That is

• gas

• liquid

• plasma

• solid

A scientist observes that the particles of a gas are arranged as shown. If the gas begins to condense into a liquid, which particle arrangement would MOST LIKELY be observed?

• a

• b

• c

• d

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Plasma occurs in electrical sparks. These sparks contain

• free protons.

• free molecules.

• ions and electrons.

• neutrons and protons.

Tags

NGSS.MS-PS2-3

As we stand and watch the hot air balloon rise in the sky, we can imagine what is happening at the microscopic level to the gas molecules inside the balloon. As the balloon rises, the gas molecules are

• moving faster and spreading apart.

• slowing down and moving closer together.

• gradually escaping from the confines of the balloon.

• all collecting at the top of the balloon, pushing upward.

Tags

NGSS.MS-PS1-4

As ice transforms into steam,

• new molecules are formed.

• the types of atoms are changed.

• energy is absorbed by the molecules.

• the mass of the molecules is increased.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which picture shows the state of matter with the following characteristics?

- Has a definite, fixed volume.

- Has a variable shape.

- Particles are constantly moving and sliding by one another.

• a

• b

• c

• d

Elaborate on the reason(s) that matter is said to move even as in a solid state.

• The particles are bound through intermolecular forces but are able to move past each other with relative freedom.

• The particles have sufficient energy to become an ionized gas and are in the most common state of matter in the universe.

• The particles are not able to move out of their positions relative to one another, but do have small vibrational movements.

• The particles are not bound to one another, move quickly, have a low density, and are able to spread apart from one another if unconstrained.

Tags

NGSS.MS-PS3-4