Science Major Feedback Test Revision

Science is a systematic enterprise that builds and organizes knowledge in the form of testable explanations and predictions about the universe. It is based on observation, experimentation, evidence, and reason.

Observation is the act of gathering information through the use of our five senses - sight, hearing, touch, taste, and smell.

Inference is the logical explanation drawn from observations, not random guesses or unsupported hypotheses.

A prediction is not a precise calculation or a predetermined outcome, but rather a guess about the future based on inference.

Qualitative Measurement involves observing and describing qualities instead of measuring with numbers.

Quantitative measurement involves numerical data and precise calculations to determine a value, making it different from other types of measurements that rely on subjective judgments or observations.

The correct definition of data refers to information that is collected and organized for use.

A bar graph is a visualization tool that uses rectangular bars to compare and represent data.

A line graph is specifically used to track changes over short and long periods of time. The correct definition includes the concept of data points connected by straight lines to show trends effectively.

Particles are objects that have mass and volume, distinct from waves, units of measurement, and forms of energy.

Solids are defined as having particles that are in a fixed position but vibrate in place.

A liquid is characterized by the ability to flow and take the shape of its container while maintaining a constant volume.

Melting is the phase transition of a substance from a solid to a liquid state, usually due to the addition of heat energy.

The correct definition of Property in this context refers to the way a substance behaves, not the other provided options which are related to different meanings of the word.

Freezing is specifically when a liquid turns into a solid by lowering its temperature, while the other options describe different phase changes.

Vaporization specifically refers to the process of a liquid turning into gas at its boiling point. The incorrect answers provided describe different physical or chemical changes.

Evaporation specifically refers to the process where a liquid changes into a gas, regardless of the temperature, without necessarily involving the solid state.

Boiling specifically refers to the process where a liquid reaches its boiling point of 100 degrees Celsius and transitions into a gaseous state.

Condensation is the process in which a gas cools and transforms into a liquid, not the other way around where a liquid is heated into a gas. It is different from sublimation, where a solid transforms directly into a gas, and also different from solidification, where a liquid turns into a solid upon cooling.

Sublimation is the process by which a solid transitions directly into a gas without going through the liquid phase. It is the opposite of deposition, where a gas transitions directly into a solid.

Deposition is a phase transition in which gas transforms into solid directly, bypassing the liquid stage. It is important to distinguish this process from other phase transitions.

Insoluble refers to substances that do not have the ability to dissolve in a specific solvent, making them unable to form a homogeneous solution.

A solute is the substance that is dissolved in a solution, as opposed to the solvent which does the dissolving.

A solution is formed when a solute dissolves in a solvent, creating a homogeneous mixture where the components are evenly distributed.

Sediment refers to the matter that settles at the bottom of a liquid due to its weight or density. It is commonly found in bodies of water where particles slowly sink to the bottom.

A suspension refers to a mixture where the components are not fully dissolved and result in a cloudy appearance with solids settling at the bottom.

Magnetic Separation is the process of using magnetic objects to separate two or more substances or objects based on their magnetic properties.