• Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

Card Range To Study

through

image

Play button

image

Play button

image

Progress

1/13

Click to flip

Use LEFT and RIGHT arrow keys to navigate between flashcards;

Use UP and DOWN arrow keys to flip the card;

H to show hint;

A reads text to speech;

13 Cards in this Set

  • Front
  • Back
Scientific method
a logical, systematic approach to the solution of a scientific problem; steps in the scientific method include making observations, testing hypotheses, and developing theories.
Theory
a well-tested explanation for a broad set of observations
Observation
information obtained through the senses; observation in science often involves a measurement.
Hypothesis
a proposed explanation for an observation
Element
the simplest form of matter that has a unique set of properties; an element cannot be broken down into simpler substances by chemical means.
Compound
A substance that contains two or more elements chemically combined in a fixed proportion
Mixture
a physical blend of two substances that are not chemically combined
Heterogeneous mixture
a mixture that is not uniform in composition; components are not evenly distributed throughout the mixture
Homogeneous mixture
a mixture that is uniform in composition; components are evenly distributed and not easily distinguishable
Chemical change (and an example)
a change that produces matter with a different composition that the original matter. Clues that a chemical change has taken place include a transfer of energy, color change, formation of a precipitate, or the production of a gas
Ex: rusting, burning, rotting, exploding, etc.
Chemical property
the ability of a substance to undergo a specific chemical change
Ex: ability to rust
Physical Change (and an example)
a change during which some properties of a material change, but the composition of the material does not change.
Ex: an ice cube melting
Physical property (and an example)
a quality or condition of a substance that can be observed or measured without changing the substance's composition
Ex: hardness, color, conductivity, malleability