Chemistry - Unit 1 (States of Matter) - Vocabulary

Apparatus (noun)

The set of tools, containers, and instruments used to perform a specific scientific experiment or task. (Equipment, gear, tools, machinery, kit)

Arrangement (noun)

The specific way in which things (like particles) are positioned or organized in a space. (Order, pattern, setup, layout)

Atmosphere (noun)

The mixture of gases that surrounds a planet or is present in a specific area. (Air, sky, surroundings, gas layer, environment)

Atom (noun)

The smallest basic unit of a chemical element that can exist and take part in a reaction. (Particle, unit, core, building block, element)

Container (noun)

An object (like a beaker or jar) used to hold, carry, or store substances. (Vessel, jar, pot, holder)

Contraction (noun)

The process of becoming smaller in size or volume, often due to cooling. (Shrinking, narrowing, tightening, decrease, reduction) It occurs when particles lose energy and move closer together.

Density (noun)

A measure of how much mass is contained in a specific volume of a substance. (Thickness, mass, heaviness, solidity, concentration)

Diffusion (noun)

The process where particles spread out from an area of high concentration to an area of low concentration. (Spreading, mixing, scattering, dispersal, movement)

Evidence (noun)

Information, facts, or observations that prove whether a theory or idea is true. (Proof, facts, data, signs, confirmation)

Fluid (noun)

A substance (like a liquid or gas) that has no fixed shape and is able to flow easily. (Liquid, gas, flowable, solution, medium)

Impurity (noun)

A small amount of a different substance that makes a pure substance "dirty" or mixed. (Dirt, mixture, flaw, contaminant, additive)

Mass (noun)

The total amount of matter that an object or substance contains. (Weight, bulk, matter, substance, quantity)

Matter (noun)

Anything that occupies physical space and has mass; the "stuff" the universe is made of. (Substance, material, stuff, physical objects, things)

Molecule (noun)

A group of two or more atoms held together by chemical bonds. (Particle, unit, group, cluster, pair)

Particle (noun)

An extremely small piece of matter that is the building block of all substances. (Bit, tiny piece, atom, molecule, unit)

Property (noun)

A quality or characteristic that describes how a substance looks or behaves. (Feature, trait, quality, mark, attribute)

State (noun)

One of the three physical forms (solid, liquid, or gas) that a substance can take depending on the heat. (phase, form, condition, stage)

Solid (noun)

A state of matter where particles are packed tightly together, giving it a fixed shape that does not flow. (hard object, firm mass, crystal)

Liquid (noun)

A state of matter where particles are close but can move past each other, allowing it to flow and take the shape of a container. (fluid, solution, melted state)

Gas (noun)

A state of matter where particles are very far apart and move rapidly in all directions to fill any space. (vapor, air, fume, steam)

Cycle (noun)

A series of events that are regularly repeated in the same order. (Loop, circle, series)

Transition (noun)

The process of changing from one state or condition to another. (Change, switch, shift)

Fixed (adjective)

Fastened securely in position; not able to be moved or adapted. (Set, permanent, steady)

Pure (adjective)

Not mixed or adulterated with any other substance or material. (Clean, unmixed, real)

Definite (adjective)

Clearly stated or decided; not vague or doubtful. (Fixed, certain, specific)

Kinetic (adjective)

Relating to or resulting from motion. (Moving, active, dynamic)

Rapid (adjective)

Happening in a short time or at a fast pace. (Fast, quick, swift)

Packed (adjective)

Extremely full of people or things. (Tight, crowded, jammed)

Significant (adjective)

Sufficiently great or important to be worthy of attention. (Important, major, serious)

Precise (adjective)

Marked by exactness and accuracy of expression or detail. (Sharp, exact, correct)

Reversible (adjective)

Able to be turned the other way round or inside out; can be undone. (Undoable, changeable)

Melt (verb)

To change from a solid to a liquid because heat energy is added. (liquefy, thaw, soften)

Boil (verb)

To change from a liquid to a gas throughout the liquid at a specific temperature. (vaporize, bubble, steam)

Freeze (verb)

To change from a liquid to a solid because heat energy is removed.

Condense (verb)

To change from a gas back into a liquid when the gas is cooled down. (liquefy, cloud, dew)

Evaporate (verb)

To change from a liquid to a gas at the surface, even below the boiling point.

Vibrate (verb)

To move back and forth quickly around a fixed point (how solid particles move). (shake, quiver, tremble)

Flow (verb)

To move smoothly and continuously like a liquid or a gas. (stream, run, glide, move)

Expand (verb)

To get bigger and take up more space because of heating. (grow, swell, enlarge)

Contract (verb)

To get smaller and take up less space because of cooling. (shrink, narrow, tighten)

Compress (verb)

To force a substance into a smaller space to reduce its volume. (squash, squeeze, press)

Occupy (verb)

To fill a certain volume or take up a certain amount of space. (fill, use, take up)

Arrange (verb)

To put particles or objects into a specific order or position. (organize, pattern, setup)

Respond (verb)

To react to a change, such as how particles act when they are cooled. (react, behave, act)

Escape (verb)

To break away from the forces holding a particle in a liquid or solid. (leave, exit, depart)

Involve (verb)

To have something as a necessary part of a process. (include, require, contain)

Determine (verb)

To find the exact cause or the final result through testing. (decide, figure out, conclude)

Conduct (verb)

To carry out a scientific test or experiment. (perform, do, run)

Demonstrate (verb)

To show clearly how a scientific theory works in real life. (show, prove, display)

Maintain (verb)

To keep something in the same condition or at the same level. (keep, save, sustain)