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Ch 11 and 12 Terms
BY Iakobos(Jacob Ledbetter)
| Question | Answer |
|---|---|
| Atoms | All things are made up of atoms |
| Parts of an Atom | Nucleus (protons & neutrons) |
| Protons | Positive charge |
| Neutrons | No charge |
| Opposites Attracted | + attracts and vice versa |
| Electrons | Negatively charged particles outside of the nucleus |
| Number of Electrons | Number of Protons |
| Number of Protons | Determines what kind of atom it is, which are identified as a different chemical element |
| Element | Substance that cannot be broken down into simpler substances by ordinary chemical means |
| Pure Substance | Matter that cannot be separated into its parts by physical means |
| Each Elements Atoms | Have the same number of protons |
| Smallest Unit of an Element | Atom |
| 90 | About the amount of elements found in nature |
| Molecule | Group of two or more atoms held together by strong chemical bonds |
| Compounds | Pure substances made up of two or more elements |
| Periodic Table of Elements | Chart that organizes and presents information about all the elements |
| Atomic Number | Identifies number of protons in the nucleus of one atom of an element |
| Atomic Mass | The Number of protons and neutrons in one atom of an element combined |
| Model | Can be a diagram, 3d representation, map, programs, or math equation |
| Period | Each horizontal row in the periodic table. These are numbered from one to seven |
| Group/Family | Each vertical column in the periodic table. These are numbered from one to eighteen |
| Metals | Elements to the left of the step-like figure. They are shiny, malleable, ductile and usually solid at room temperature. They are good conductors of heat and electricity |
| Non-Metals | Elements that aren’t metals. They are located above or to the right of the step-like figure. They are dull, brittle, and poor conductors of heat and electricity |
| Metalloids | Have characteristics of metals and non-metals |
| Chemical property | a characteristic that determines how a substance will interact with other substances during a chemical reaction |
| Reactivity | describes how likely an element is to react and form bonds with other elements |
| Ion | atom that has a positive or negative charge |
| Inert | unable to react chemically |
| Alkali Metals | Metals that are the most reactive, have a low density, and can be cut with a knife fall into this group |
| Alkaline-earth metals | Not as reactive as Alkali metals, but still very reactive. Silver in color and are denser than Alkali |
| Transition Metals | Includes groups 3-12 on periodic table, shiny, good conductors of thermal energy, higher densities and melting points than groups 1-2, except mercury |
| Boron Group | Reactive, solid at room temperature |
| Carbon Group | varied reactivity, solid at room temperature |
| Nitrogen Group | varied reactivity, all but nitrogen are solid at room temperature |
| Oxygen Group | reactive, all but oxygen are solid at room temperature |
| Halogens | Very reactive, poor conductors of electricity, react violently with alkali to form salts, never found uncombined in nature |
| Noble Gases | unreactive, colorless, odorless gases at room temperature |
| Hydrogen | reactive, colorless, odorless gas at room temperature; reacts explosively with oxygen |
Created by:
PhySciLewis1
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