Chemistry 312 Unit 1 Homework Review

Flashcards covering key concepts and definitions in Chemistry 312, focusing on matter, properties, research types, and basic chemistry principles.

Matter

Anything that has mass and takes up space.

Mass

A measurement of the amount of matter.

Weight

A measurement of the amount of matter affected by gravity.

Scientific Method

A systematic approach used in scientific study consisting of steps such as observing, developing a hypothesis, experimenting, and concluding.

Independent Variable

The variable that is changed or controlled in a scientific experiment.

Dependent Variable

The variable that is measured and affected in an experiment.

Charles's Law

A law describing the direct relationship between temperature and volume of gasses at constant pressure.

Hypothesis

A proposed explanation for a phenomenon that is not yet supported by data.

Pure Research

Research conducted for the sake of knowledge itself.

Applied Research

Research undertaken to solve a specific problem.

Physical Property

A characteristic of a substance that can be observed or measured without altering the substance.

Chemical Property

A characteristic of a substance that describes its potential to undergo chemical changes.

Physical Change

A change that alters the form or appearance of a substance without altering its chemical composition.

Chemical Change

A change that results in the formation of new chemical substances.

Mixture

A physical blend of two or more substances that retain their individual properties.

Heterogeneous Mixture

A mixture that is not uniform in composition and has distinct phases or components.

Homogeneous Mixture

A mixture that is uniform in composition throughout.

Distillation

A separation technique that involves the vaporization and condensation of a liquid to separate components.

Filtration

A separation technique used to separate solids from liquids using a filter medium.

Law of Multiple Proportions

A principle that states different compounds made of the same two elements can form with mass ratios that are simple whole numbers.

Periodic Table

An arrangement of elements based on their atomic number, organized in horizontal periods and vertical groups.