Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
YOO
| Question | Answer |
|---|---|
| Scientific Method Steps | Make observations & identify a problem; Form a hypothesis; Test the hypothesis; Record & analyze data; Draw a conclusion |
| Observation (Qualitative) | Descriptive, non-numerical (color, smell, texture) |
| Observation (Quantitative) | Numerical (mass = 10 g, volume = 5 mL) |
| Independent Variable | The variable that is changed |
| Dependent Variable | The variable that is measured or observed |
| Science | Gaining knowledge about the natural world |
| Technology | Applying knowledge to make tools/products |
| Hypothesis | Testable proposed explanation |
| Scientific Theory | Well-tested explanation, explains how/why |
| Scientific Law | Describes what happens, predicts results, no explanation |
| Kinetic-Molecular Theory | Matter is made of particles in constant motion; particles have space; particles have energy; temperature = average kinetic energy; attractive forces stronger when particles are closer |
| Solid Properties | Definite shape & volume; particles tightly packed, vibrate in place; strong attraction; low energy |
| Liquid Properties | Definite volume, no definite shape; particles close but slide; medium attraction & energy |
| Gas Properties | No definite shape or volume; particles far apart, move very fast; weak attraction; high energy |
| Energy & Particle Spacing | More energy → more space between particles |
| Matter | Has mass and volume |
| Mass | Amount of matter |
| Volume | Space occupied |
| Pure Substance | Fixed composition, one type of particle |
| Element | One type of atom, cannot be broken down (e.g., H₂, O₂, Fe) |
| Compound | Two or more elements chemically bonded, definite formula (e.g., H₂O, NaCl) |
| Mixture | Physical combination, variable composition, substances keep properties |
| Homogeneous Mixture | Uniform throughout (e.g., saltwater, air) |
| Heterogeneous Mixture | Not uniform, visible different parts (e.g., oil & water) |
| Filtration | Separates based on particle size |
| Distillation | Separates based on boiling point |
| Evaporation | Separates using vaporization |
| Decanting | Pouring off liquid layer |
| Physical Property | Observed without changing substance (density, color, melting point) |
| Extensive Property | Depends on amount (mass, volume) |
| Intensive Property | Does not depend on amount (density) |
| Chemical Property | Ability to form a new substance (rusting, burning, reacting with acid) |
| Physical Change | No new substance formed (melting, cutting, dissolving) |
| Chemical Change | New substance formed (rusting, burning, baking) |
| Density Formula | Density = mass ÷ volume |
| Mass Formula | Mass = density × volume |
| Volume Formula | Volume = mass ÷ density |
| Density Units | g/cm³ (solids), g/mL (liquids) |
Created by:
user-2017848