The amount of energy in molecules of matter
determines the state of matter. Matter can exist in one of several different states, including a gas, liquid, or solid state. … A gas is a state of matter in which atoms or molecules have enough energy to move freely.
What does the state of a substance depend on?
The state of a substance depends on the
relative strength of the cohesive forces (potential energy)
that hold particles together and the disruptive forces (kinetic energy) that tends to scatter them.
What two things determine the state of a substance?
- The kinetic energies of the particles (atoms, molecules, or ions) that make up a substance. Kinetic energy tends to keep the particles moving apart.
- The attractive intermolecular forces between particles that tend to draw the particles together.
How do you know if a substance is a solid liquid or gas?
Solids have a definite shape and volume
. Liquids have a definite volume, but take the shape of the container. Gases have no definite shape or volume.
What is the most important factor in determining the state of a substance?
Discuss why
temperature
is the most important factor in determining the state of a substance. Compare and contrast gases and plasmas. Both gases and plasmas consist of energetic particles that are so far apart that attractive forces between particles are inconsequential.
What three factors affect the physical state of a substance?
- surface area of a solid reactant.
- concentration or pressure of a reactant.
- temperature.
- nature of the reactants.
- presence/absence of a catalyst.
Does the temperature of a substance depends on how much of the substance is present?
The temperature of the melting and boiling points depend on the identity of the substance and
the atmospheric pressure
. Each substance has its own boiling and melting points that depend on the properties of the substance, including the strength of its intermolecular forces.
What are the three states of matter give examples?
- Solids – relatively rigid, definite volume and shape. In a solid, the atoms and molecules are attached to each other. …
- Liquids – definite volume but able to change shape by flowing. In a liquid, the atoms and molecules are loosely bonded. …
- Gases – no definite volume or shape.
What is the effect of pressure in change of state of matter?
By increasing pressure, particles of matter can be brought close together. When we apply pressure on a gas enclosed in a cylinder, it
starts compressing and converts into liquid
. Thus, by applying pressure and reducing temperature a gas can be liquefied.
What gases are liquids?
Gas-to-liquids (GTL) is a process that
converts natural gas to liquid fuels such
as gasoline, jet fuel, and diesel. GTL can also make waxes. The most common technique used at GTL facilities is Fischer-Tropsch (F-T) synthesis.
Can liquids be compressed?
flow and take the shape of their container, because their particles can move around each other.
cannot be compressed
, because their particles are close together and have no space to move into.
What factor is most important in determining whether water is solid liquid or gas?
Temperature
is the most important factor in determining the state of basically any molecular system.
What are the 2 main classes of matter and what characteristics differentiate them?
Matter can be broken down into two categories:
pure substances and mixtures
. Pure substances are further broken down into elements and compounds. Mixtures are physically combined structures that can be separated into their original components. A chemical substance is composed of one type of atom or molecule.
How do you determine state of matter?
The state of matter of each compound or molecule is
indicated in subscript next to the compound by an abbreviation in parentheses
. For example, a compound in the gas state would be indicated by (g), solid (s), liquid (l), and aqueous (aq).
Is feeling hot a matter?
Whether you run hot or cold is usually
a subjective matter
, and rarely is it cause for concern. That said, there are certain medical conditions that can affect how hot or cold you feel. Menopause, as you likely know, can cause hot flashes—a brief, intense warmth that causes the heart to race and the body to sweat.
What affects the physical properties of a substance?
As the names suggest,
a physical change
affects a substance’s physical properties, and a chemical change affects its chemical properties. Many physical changes are reversible (such as heating and cooling), whereas chemical changes are often irreversible or only reversible with an additional chemical change.
