Matter, Properties, Atom Structure & Periodic Table

Flashcards covering matter, properties, atom structure, and the periodic table based on lecture notes.

Compound

A substance made up of two or more elements that are chemically combined.

Binary Compound

A compound made up of two elements chemically combined.

Heterogeneous Mixture

A mixture in which the components are distinct.

Colloid

A mixture with particles that never settle and shows the Tyndall effect.

Suspension

A mixture with particles that settle over time.

Atom

The smallest particle of an element.

Molecule

Formed when atoms are bonded covalently.

Hydrate

A compound that contains water in its chemical structure.

Solution

A homogeneous mixture where substances are evenly distributed.

Physical Properties

Characteristics that can be observed without changing the substance (e.g., melting point, color, size).

Chemical Change

A change that results in new substances being formed.

Signs of Chemical Change

Indicators that a chemical reaction has occurred (e.g., color change, temperature change, gas formation).

Physical Change

A change that affects a substance's appearance but not its identity.

Law of Conservation of Mass

States that mass is conserved during chemical reactions.

Nucleus

The central part of an atom, containing protons and neutrons.

Protons

Positively charged particles located in the nucleus of an atom.

Neutrons

Neutral particles located in the nucleus of an atom.

Electrons

Negatively charged particles found in the electron cloud surrounding the nucleus.