REVIEW: A scientific ___ describes what will happen under certain conditions, but does NOT attempt to explain why it happens.

REVIEW: A(n) ___ is a logical explanation of an observation that is drawn from prior knowledge or experience.

A combination of two or more substances that can be separated by physical means is known as

Which of the following is a pure substance that consists of only ONE kind of atom, for example, hydrogen or carbon?

Which type of matter has a fixed makeup and CANNOT be separated by physical means?

In this type of mixture, the components are NOT distributed evenly and can be easily distinguished from each other.

A pure substance that consists of the atoms of two or more elements chemically bonded, for example water (H₂O) and carbon dioxide (CO₂) are known as

In which type of mixture are the components EVENLY distributed? Examples include saltwater or lemonade.

Which of the following variables is TESTED during an experiment and changed by the investigator?

A quantity or quality that could change during the course of an investigation is known as a

Which of the following is kept the SAME throughout the experiment to ensure that all data is accurate and valid?

Which of the following is MEASURED in an experiment?