Secondary Chemistry Study Guide - Matter, Properties, and Scientific Practice

Vocabulary flashcards covering core topics from the 3rd Grade Secondary Chemistry Study Guide, including laboratory tools, scientific method terminology, states of matter, and material properties.

Chemistry

The science that studies matter, its properties, its changes, and the way materials behave and interact.

Hypothesis

A testable proposed explanation or statement created during scientific work that can be investigated using evidence.

Beaker

A laboratory equipment item used for holding or mixing small quantities of substances.

Graduated cylinder

A laboratory instrument used specifically for measuring liquid volume.

Pipette

A laboratory tool used for transferring a measured small volume of liquid.

Thermometer

An instrument used for measuring temperature to determine the thermal condition of a substance or material.

Digital or analytical balance

An instrument used for measuring the mass of a sample.

Bunsen burner / electric hot plate

Laboratory equipment used for heating substances during experiments.

Stirring bar

A tool used in the laboratory context for mixing substances.

Universal indicator

A substance used for observing acid/base-related color changes in a solution.

Magnet

An instrument used for testing the magnetic behavior of materials.

Matter

The physical substance that makes up the objects and materials around us.

Solid

A state of matter where particles are close together and organized, vibrate in place, and maintain a definite shape and volume.

Liquid

A state of matter where particles are close but can move and slide past one another, keeping a definite volume while taking the shape of their container.

Gas

A state of matter where particles are far apart and move freely and rapidly, expanding to fill available space.

Corpuscular model of matter

A particle kinetic representation used to explain or predict phenomena by modeling matter as being made of particles.

Physical property

A characteristic that can be observed or measured without changing the chemical identity of the substance.

Chemical property

A characteristic describing how a substance may behave or change when undergoing a chemical interaction or transformation with another substance.

Extensive property

A property that changes when the amount of matter changes, such as mass and volume.

Intensive property

A property that does not depend on how much material is present, such as temperature, used to identify or compare materials.

Physical change

A process where the form, state, size, or appearance of matter changes while the substance itself remains the same material.

Chemical change

A transformation where original substances change to produce different substances or new chemical characteristics.

Stopwatch

An instrument used to measure the duration of a process or test.