TEAS Matter NC

States of Matter and Changes of Matter

Which state of matter expands to fill any container it is placed in?

A. Solid

B. Liquid

C. Gas

D. Plasma

C. Gas

Gas: Indefinite volume: Volume changes as it expands and contracts.

Solids retain shape and volume in a container.

liquid constant volume and takes on the shape of the container

Plasma found in ionized shapes/

What property is unique to liquids among the states of matter?

A. Definite volume but no definite shape

B. No definite volume and no definite shape

C. Definite volume and definite shape

D. No definite volume but definite shape

A. Definite volume but no definite shape

What is the primary reason gases are compressible

A. High density

B. Strong intermolecular forces

C. Large spaces between particles

D. Low kinetic energy

C. Large spaces between particles

Gas

Gas has low density. Gas has high kinetic energy. Strong intermolecular forces would be a solid.

Why do liquids form droplets?

A. High viscosity

B. Low Density

C. Rapid Evaporation

D. Surface tension

D. Surface tension

What property of solids allows them to maintain a fixed volume and shape?

A. High kinetic energy

B. Weak intermolecular forces

C. Strong intermolecular forces

D. High Compressibility

C. Strong intermolecular forces

Solids

Packed together tightly

VIBRATING IN POSITION (solids do move)

Anchored at a specific location

Gases: High Kinetic energy, Weak intermolecular forces & High Compressibility

Which state of matter is characterized by ionic or electronic conductivity and formed under high temperature or low pressure

A. Solid

B. Liquid

C. Gas

D. Plasma

D. Plasma

the only type of matter that has ionic or electronic conductivity is plasma (ex. star or neon signs)

What causes the phenomenon of surface tension in liquids?

A. High pressure within the liquid

B. Cohesive forces among the liquid molecules

C. The presence of impurities in the liquid

D. Interaction between the liquid and air

B. Cohesive forces among the liquid molecules

Cohesion: attraction of molecules of the same kind.

Memory tip: Co-worker or Co-Home

Water molecules are at home when they are with each other.

How does the addition of heat energy typically affect the state of matter?

A. Heat causes all states of matter to freeze.

B. Heat transfers molecules into a less-ordered state.

C. Heat decreased molecular motion, stabilizing the structure.

D. Heat creates stronger intermolecular bonds.

B. Heat transfers molecules into a less-ordered state.

What happens to the boiling point of water when external pressure is increased

A. It increases

B. It decreases

C. It remains the same

D. It becomes unpredictable

A. It increases

What happens to the density of air when it is heated at constant pressure?

A. Density increases

B. Density decreases

C. Density remains the same

D. Density becomes variable

B. Density decreases

As air is heated the gas (air) expands causing the density to decrease

what happens during the sublimation process

A. A solid turns directly into a gas

B. A gas turns directly into a solid

C. A liquid turns directly into a gas

D. A solid turns directly into a liquid

A. A solid turns directly into a gas

Ex: Dry ice

B is Deposition, C is evaporation, D is melting

Which phase change is exothermic?

A. Vaporization

B. Melting

C. Deposition

D. Sublimation

C. Deposition

also known as desublimation is when a gas changes directly into a solid without first becoming a liquid; an every day is frost forming on a cold window

Exothermic releases energy to surroundings- releasing heat

What describes the energy change during condensation?

A. Energy is absorbed from the environment

B. Energy is released to the environment

C. No energy change occurs

D. Energy is converted from kinetic to potential

B. Energy is released to the environment

What phase change occurs when liquid water is cooled to 0° C under normal atmospheric pressure?

A. Melting

B. Evaporation

C. Freezing

D. Condensation

C. Freezing

During the boiling of water, which process describes the transition from liquid to gas?

A. Vaporization

B. Melting

C. Freezing

D. Sublimation

A. Vaporization

Transformation of a liquid into a gas, usually when the liquid is heated; this is the principle behind sweating., where heat from the body is used to evaporate sweat, cooling the skin

Which condition is necessary for the condensation of water vapor into dew on grass?

A. Increase in temperature

B. Decrease in temperature

C. Increase in pressure

D. Decrease in pressure

B. Decrease in temperature

Process where a gas loses heat and turns into a liquid. This is how clouds are formed when water vapor in the air cools and condenses

Which phase change involves the absorption of energy?

A. Freezin

B. Deposition

C. Melting

D. Condensation

C. Melting

When a solid gains heat and changes into a liquid; this is what happens when ice turns into water as it warms up.

Which condition typically results in the deposition of water vapors into frost?

A. Warm temperatures and high humidity

B. Cold temperatures and high humidity

C. Cold temperatures and low humidity

D. Warm temperatures and low humidity

B. Cold temperatures and high humidity

What is the driving force behind the natural process of freezing?

A. The kinetic energy of particles increases

B. The kinetic energy of particles decrease

C. The potential energy of particles increase

D. The intermolecular forces become repulsive

B. The kinetic energy of particles decrease

Why do substances like naphthalene and dry ice sublimate rather than melt under normal atmospheric conditions?

A. They have strong intermolecular forces

B. They are chemically unstable

C. They absorb heat too rapidly

D. They lack the liquid phase at normal pressure

D. They lack the liquid phase at normal pressure

Sublimation: process where a solid changes directly into a gas without first becoming a liquid; thus is how dry ice disappears at room temperature, turning directly into a gas