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
Chapter 7 chem
| Term | Definition |
|---|---|
| How can you determine the number of valence electrons in an atom of a representative element? | The number of valence electrons is the same as the periodic group number |
| How do cations form | when an atom loses one more electrons; the loss of electrons form an overall positive charge |
| How do anions form | When one or more electrons are gained; typically pulled from another atom |
| What is a valence electron | Electrons in the outermost energy level |
| How do valence electrons determine chemical properties | Valence electrons are the one gained or lost or shared during a chemical reaction so this effects there chemical properties and they will be the first to react due to being on the outside. |
| Explain the octet rule | Atoms react by gaining or losing electrons so as to acquire the stable electron structure of a noble gas |
| What are the exception to the octet rule | the transition metals |
| Ionic compounds | made up of ions and held together by ionic bonds |
| Ionic bonds charge | neutral or equal to zero |
| Ionic Compound Properties | crystalline solid a room temp, high melting point, coordination number (number of oppositely charged ions around an ion in a crystal), tend to be good electrical conductors when dissolved |
| What does the chemical formula of an ionic compound represent | ratio |
| How do chemists model the valence electrons of metal atoms? | As sea of electrons |
| Why alloys more useful than pure metals? | Alloys have better corrosion resistance, lower costs, high strength and better work ability |
| Ductile | Able to be drawn into wire |
| Malleable | Hammered or pressed into sheets |
| Describe two ways that an ion form an atom | Ions from when atoms gain or lose electrons for the outermost shell |
| Define an ionic bond | The chemical bonding that involves the attraction between two opposite charged ions. |
| How can you represent the composition of an ionic compound | The composition of an ionic compound is represented by a formula which is a ratio between cations and anions |
Created by:
salleejamie
Popular Chemistry sets