Vocab Flashcard #2

Front

A widely accepted explanation of natural phenomena is a ___

Back

theory

Front

A scientific ___ describes what will happen under certain conditions, but does NOT explain why.

Back

Law

Front

A logical explanation of an observation drawn from prior knowledge or experience is called a ___

Back

inference

Front

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

Back

a mixture

Front

Pure substance with one type of atom (e.g., hydrogen, carbon)

Back

element

Front

Type of matter with a fixed makeup that cannot be separated by physical means.

Back

pure substance

Front

Mixture with unevenly distributed components, easily distinguishable.

Back

heterogeneous

Front

A pure substance made of two or more chemically bonded elements, e.g., water (H₂O), is known as

Back

compounds

Front

Type of mixture with evenly distributed components (e.g., saltwater, lemonade).

Back

homogeneous mixtures

Front

Variable tested and changed by the investigator:

Back

Independent variable