Science 9 Chemistry Review

Flashcards covering key concepts from Science 9 Chemistry, including definitions of matter, types of mixtures, properties of substances, and important historical figures in chemistry.

Matter

Anything that has mass and takes up space.

Pure Substance

Made up of one type of particle; cannot be separated by physical means.

Mixture

Made up of two or more substances; can be separated by physical means.

Homogeneous Mixture

Mixtures that are mixed uniformly and cannot see their components.

Heterogeneous Mixture

Mixtures that have different components that can be seen.

Element

A pure substance made up of one type of atom.

Compound

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

Physical Properties

Characteristics of matter that can be observed or measured without changing the chemical identity.

Chemical Properties

Describe the ability of matter to react with another substance to form different substances.

Viscosity

A measure of a fluid's resistance to flow.

Conductivity

The ability to conduct or transmit heat, electricity, or sound.

Combustibility

How easily a substance bursts into flame.

Reactivity

The tendency for a substance to undergo a chemical reaction.

Periodic Table

A tabular arrangement of elements organized by increasing atomic number.

Atomic Number

The number of protons in an atom, which determines the element's identity.

Mendeleev's Periodic Table

An early version of the periodic table that ordered elements by increasing atomic mass and properties.