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UNIT 1
Atomic Structures & Molecules
| Defintion | Term |
|---|---|
| Anything that has mass and takes up space is called _______. | matter |
| List the 4 states of matter. | Plasma, solid, liquid, & gas |
| All matter is divided into what two groups | pure substance and mixtures |
| This is a type of matter that is made up of only one kind or chemical or particle. | pure substance |
| List the two groups of pure substance. | elements and compounds |
| How many letters represent an element on the periodic table? | One or two |
| Are element physically or chemically combined? | chemically |
| All matter is made up of tiny particles called? | atoms |
| What are the basic building blocks of matter? | atoms |
| What do we use to help us visualize and understand the atomic composition and structures of atoms and molecules? | models |
| List the 3 subatomic particles that make up an atom. | protons, neutrons, & electrons |
| Out of the 3 subatomic particles of an atom, which one makes up the nucleus? | protons & neutrons |
| Which subatomic particle of an atom is found outside the nucleus? | electrons |
| What is the charge for a proton? | positive (+) |
| What is the charge for a neutron? | No charge; 0 charge; neutral |
| What is the charge for an electron? | negative (-) |
| Out of the 3 subatomic particles of an atom, which one is responsible for forming or making chemical bonds? | electrons |
| What is another name for a homogeneous mixtures? | A solution |
| A mixture that is easily distinguished "seen" is is not evenly or not uniformly mixed? | heterogeneous mixtures |
| A mixture that is not easily distinguished "seen" and is evenly and uniformly mixed because the particles are very tiny. | homogeneous mixtures |
| Are characteristics that can be observed without changing the matter into another type of matter. | Physical properties |
| Is the measure of the mass of a material in a given bolume. | densitiy |
| The temperature at which a liquid changes into a gas or vapor. | boiling point |
| The temperature at which a solid changes to a liquid. | melting points |
| The measure of how much solute can dissolve in a given solvent at a given temperature. | solubility |
| The good or bad smell, scent, or aroma that a person can sense with their nose. | odor |
| Are characteristics that can be observed that describes something's ability to become something new. | Chemical properties |
| A single kind of matter that alwasys has a specific makeup or composition. | Substance |
| Made up of two or more different atoms or elements chemically combined. | compounds |
| A change that alters the form or appearance of a substance withouth changing it into a different substance. | Physical change |
| What state or phase change is this? Solid goes to Liquid? | melting (a physical change) |
| What state or phase change is this? Liquid goes to Solid? | freezing (a physical change) |
| What state or phase change is this? Liquid goes to gas? | evaporation or boiling (a physical change) |
| What state or phase change is this? Gas goes to liquid? | condensation (a physical change) |
| A change in which a substance proudes one or more new substances with new characteristics | chemical changes |
| List the 2 examples of a chemical change. | rusting and burning |
| List the 5 examples of a physical property. | density, boiling point, melting point, solubility, & odor |
| List the 2 examples of a chemical property. | flammability & the ability to break/form chemical bonds |
Created by:
Westview7G
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