Changes of state and the particle model key terms

Density

The mass of a substance per unit volume, typically expressed in kilograms per cubic meter (kg/m³) or grams per cubic centimeter (g/cm³).

Mass

The amount of matter in an object, measured in kilograms (kg), distinct from weight which is the force exerted by gravity on that mass.

Density

The mass of a substance per unit volume, typically expressed in kilograms per cubic meter (kg/m³) or grams per cubic centimeter (g/cm³).

Volume

The amount of space occupied by a substance, measured in cubic meters (m³) or cubic centimeters (cm³).

Density

The mass of a substance per unit volume, typically expressed in kilograms per metre cubed (kg/m³) or grams per centimetre cubed (g/cm³).

Mass

A measure of the amount of matter in an object, usually measured in kilograms (kg) or grams (g).

Density

The mass of a substance per unit volume, typically expressed in kilograms per cubic meter (kg/m³) or grams per cubic centimeter (g/cm³).

Volume

The amount of space occupied by a substance, measured in cubic meters (m³) or cubic centimeters (cm³).

Density

Density is defined as mass per unit volume, typically expressed in kilograms per metre cubed (kg/m³) or grams per centimetre cubed (g/cm³).

Mass

In Density of materials, Mass means in Density of materials, Mass means mass is a measure of the amount of matter in an object, measured in kilograms (kg). Use this term when explaining calculate mass when density and volume are known in Changes of state and the particle model. It is curriculum-specific for AQA GCSE Physics 8463 because it links the word to the approved objective rather than a vague everyday meaning. Use this term when explaining calculate mass when density and volume are known in Changes of state and the particle model. It is curriculum-specific for AQA GCSE Physics 8463 because it links the word to the approved objective rather than a vague everyday meaning.

Density

Density is defined as mass per unit volume, typically expressed in kilograms per cubic meter (kg/m³) or grams per cubic centimeter (g/cm³).

Rearranging the Density Equation

Rearranging the density equation involves manipulating the formula density = mass/volume to solve for mass, volume, or density as needed.

Density

The mass of a substance per unit volume, typically expressed in kilograms per cubic meter (kg/m³) or grams per cubic centimeter (g/cm³).

Regular Solid

A three-dimensional object with a uniform shape and consistent dimensions, allowing for straightforward volume calculations.

Density

The mass of a substance per unit volume, typically expressed in kilograms per cubic meter (kg/m³) or grams per cubic centimeter (g/cm³).

Irregular Solid

A solid object that does not have a regular shape, making it necessary to use methods such as water displacement to determine its volume.

Density

The mass of a substance per unit volume, typically expressed in kilograms per cubic meter (kg/m³) or grams per cubic centimeter (g/cm³).

Liquid

A state of matter characterized by a definite volume but no fixed shape, allowing it to flow and take the shape of its container.

Volume

In Density of materials, Volume means in Density of materials, Volume means the amount of space occupied by an object, measured in cubic units. Use this term when explaining describe how to determine the volume of a regular solid using length measurements in Changes of state and the particle model. It is curriculum-specific for AQA GCSE Physics 8463 because it links the word to the approved objective rather than a vague everyday meaning. Use this term when explaining describe how to determine the volume of a regular solid using length measurements in Changes of state and the particle model. It is curriculum-specific for AQA GCSE Physics 8463 because it links the word to the approved objective rather than a vague everyday meaning.

Regular Solid

A three-dimensional shape with consistent dimensions and angles, such as a cube or a sphere.

displacement

The method used to determine the volume of an irregular solid by measuring the volume of water it displaces.

irregular solid

A solid object that does not have a regular shape, making it difficult to measure its volume using standard geometric formulas.

Density

The mass of a substance per unit volume, typically expressed in kilograms per cubic meter (kg/m³) or grams per cubic centimeter (g/cm³).

Measuring Cylinder

In Density of materials, Measuring Cylinder means in Density of materials, Measuring Cylinder means a laboratory instrument used to accurately measure the volume of liquids. Use this term when explaining describe how to determine the density of a liquid using a balance and measuring cylinder in Changes of state and the particle model. It is curriculum-specific for AQA GCSE Physics 8463 because it links the word to the approved objective rather than a vague everyday meaning. Use this term when explaining describe how to determine the density of a liquid using a balance and measuring cylinder in Changes of state and the particle model. It is curriculum-specific for AQA GCSE Physics 8463 because it links the word to the approved objective rather than a vague everyday meaning.

Density

The mass of a substance per unit volume, typically expressed in kilograms per cubic meter (kg/m³) or grams per cubic centimeter (g/cm³).

Mass

In Density of materials, Mass means in Density of materials, Mass means a measure of the amount of matter in an object, usually measured in kilograms (kg). Use this term when explaining apply AT 1 and AT 3 skills when measuring mass and volume in Changes of state and the particle model. It is curriculum-specific for AQA GCSE Physics 8463 because it links the word to the approved objective rather than a vague everyday meaning. Use this term when explaining apply AT 1 and AT 3 skills when measuring mass and volume in Changes of state and the particle model. It is curriculum-specific for AQA GCSE Physics 8463 because it links the word to the approved objective rather than a vague everyday meaning.

Density

The mass of a substance per unit volume, typically expressed in kilograms per cubic meter (kg/m³) or grams per cubic centimeter (g/cm³).

Mass

In Density of materials, Mass means in Density of materials, Mass means a measure of the amount of matter in an object, usually measured in kilograms (kg). Use this term when explaining apply MS 1c and MS 3c skills when using standard form, significant figures and rearranging the density equation in Changes of state and the particle model. It is curriculum-specific for AQA GCSE Physics 8463 because it links the word to the approved objective rather than a vague everyday meaning. Use this term when explaining apply MS 1c and MS 3c skills when using standard form, significant figures and rearranging the density equation in Changes of state and the particle model. It is curriculum-specific for AQA GCSE Physics 8463 because it links the word to the approved objective rather than a vague everyday meaning.

Density

The mass of a substance per unit volume, typically expressed in kilograms per cubic meter (kg/m³) or grams per cubic centimeter (g/cm³).

Measured Values

Quantitative data obtained through experiments or observations, used to determine the density of materials.

Particle Arrangement

The specific way in which particles are organized in solids, liquids, and gases, affecting their properties.

Particle Movement

The motion of particles in solids, liquids, and gases, which varies based on the state of matter and influences temperature and energy.

melting

The process where a solid turns into a liquid due to increased particle energy and changes in particle arrangement.

particle arrangement

The specific way in which particles are organized in solids, liquids, and gases, affecting their properties and behavior.

freezing

The process where a liquid loses energy, causing particles to arrange closely and form a solid.

particle arrangement

The specific organization of particles in solids, liquids, and gases that determines their physical properties.

boiling

The process where a liquid changes to gas when particles gain enough energy to overcome intermolecular forces.

particle energy

The energy possessed by particles that affects their movement and arrangement in different states of matter.

evaporation

The process by which particles escape from the surface of a liquid, transitioning into the gas phase.

liquid

A state of matter characterized by a definite volume but no fixed shape, allowing it to flow and take the shape of its container.

Condensing

The process where gas particles lose energy, resulting in a closer arrangement and transition to a liquid state.

Particle arrangement

The specific organization of particles in a substance, which varies between solids, liquids, and gases.

Sublimation

The process in which a solid changes directly into a gas without passing through the liquid state.

Particle Arrangement

The specific organization of particles in a solid, liquid, or gas, which influences the state and properties of the material.

Boiling

The process where a liquid changes to gas throughout the liquid when it reaches its boiling point.

Evaporation

The process where particles escape from the surface of a liquid to become gas at any temperature.

physical change

A change that affects one or more physical properties of a substance without altering its chemical composition.

state change

The transformation of a substance from one state of matter (solid, liquid, gas) to another, such as melting or boiling.

mass conservation

The principle that the total mass of a closed system remains constant over time, regardless of the processes acting inside the system.

change of state

The transformation of a substance from one state of matter (solid, liquid, gas) to another, which involves energy transfer but does not change the substance's mass.

change of state

The transformation of a substance from one physical state to another, such as solid to liquid or liquid to gas.

reversible change

A change that can be reversed, allowing the material to return to its original properties.

Particle Model

A model that describes the arrangement and movement of particles in solids, liquids, and gases.

Fixed Shape

The characteristic of solids where particles are closely packed in a fixed arrangement, preventing flow.

Particle Model

A model that describes the arrangement and movement of particles in solids, liquids, and gases.

Density

The mass of a substance per unit volume, typically measured in kilograms per cubic meter (kg/m³) or grams per cubic centimeter (g/cm³).

particle model

A theoretical framework that describes the arrangement and behavior of particles in solids, liquids, and gases.

limitations of particle model

The constraints of simple particle model diagrams in accurately depicting real particles, their interactions, and motion.