intro chem

Core science

Science that studies matter in the universe and how it changes or interacts

Microscopic/Particle-level

The scale at which objects are too small to be seen with the naked eye

Macroscopic

The scale at which objects are large enough to be seen without a microscope

Micro view

Looking at the microscopic components of ordinary objects to understand how they behave

Scientific method

A systematic process used to investigate questions and test ideas through observation

Variables

Factors in an experiment that can be changed

Independent variable

The variable that is intentionally changed or manipulated by the experimenter

Dependent variable

The variable that is measured or observed and changes in response to the independent variable

Controlled variable

A factor that is kept constant throughout an experiment to ensure a fair and accurate test

Quantitative

Numerical data that can be measured

Qualitative

Descriptive data that describes qualities

Tables

Organized displays of data arranged in labeled rows and columns

Graphs

Visual representations of data that show relationships between variables and help identify trends

Analysis

The process of examining data for trends

Lab day rules

Safety and behavior guidelines that must be followed during laboratory activities

Cooks and backpacks

Keep cooks and backpacks outside the laboratory work area

Listen for instructions

Pay attention to instructions before beginning active laboratory work

Wear goggles and pull hair back

Wear safety goggles and secure long hair to reduce the risk of injury

Walk calmly and carefully

Move carefully and calmly when getting equipment to prevent accidents

Report injuries and broken materials

Notify the teacher if you are injured or if laboratory equipment breaks

Remain on task

Stay focused on the assigned laboratory activity

Clean and return materials

Clean the workspace and return all equipment and materials to their proper locations

No food or open containers

Do not bring food or use open food or drink containers in the laboratory