Study Guide
Quick meanings for every word. Pair Tier 3 words with pictures to support newcomers.
| Word | Meaning |
|---|---|
| Groups | A column on the periodic table. Elements in the same column have similar properties. |
| Metalloids | An element with some traits of both metals and nonmetals, like silicon. |
| Metals | An element that is usually shiny, can be bent, and conducts heat and electricity well. |
| Nonmetals | An element without the typical combination of metallic properties; many conduct electricity poorly, but exceptions exist. |
| Periods | A row across the table of elements, read from left to right. |
| Properties | A trait that describes a material and helps you tell it apart from others. |
| Boiling Point | The temperature at which a liquid’s vapor pressure matches the surrounding pressure, allowing gas bubbles to form throughout the liquid. |
| Color | The visual appearance of light reaching the eye, depending on its wavelengths and how the eye responds. |
| Compounds | A substance made of two or more elements joined together chemically, like water (H₂O). |
| Conductivity | A measure of how well a material allows heat or electricity to pass through it. |
| Conservation of Mass | The rule that matter is not created or destroyed in a change, so the total mass stays the same. |
| Density | How much mass is packed into a certain volume. |
| Elements | A pure substance made of one kind of atom; chemical reactions cannot break it into simpler substances. |
| Hardness | How well a material resists being scratched. |
| Malleability | A measure of how easily a material can be bent or hammered into a new shape without breaking. |
| Melting Point | The temperature at which a solid turns into a liquid. |
| Periodic Table of Elements | A chart of the elements arranged by increasing atomic number, with recurring patterns in properties. |
| Phase Change | Matter changing between solid, liquid, and gas. The particles change how they move and how far apart they are. |
| Solubility | The greatest amount of a substance that can dissolve in a given amount of solvent under specified conditions, such as temperature. |
| Viscosity | A fluid’s resistance to flowing; more resistant fluids flow less easily under the same conditions. |