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38 Cards in this Set
- Front
- Back
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Cations |
-Lose electrons
-Positive + (ca-+-ions)
-METAL |
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Anions |
-Gain electrons
-Negative A Negative Ion
-Ending -ide -Non metals |
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Ionic bond |
Bond that forms between ions of opposite charge through transfer of electrons. (Metal and non) |
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Molecule and example |
Atoms held by covalent bond 2 or more different substance chemically combine.
Oxygen, water, nitrogen, chlorine |
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Compounds and example |
2 or more different elements held together by chemical bond with the exact propotion
Water and carbon dioxide |
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Mixtures |
2 or more substance not chemically combined together which can be easily seperated by physical method Water sand |
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Ions |
When atoms lose or gain electrons to be stable |
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Formula bond to remeber |
1.if it's 1 don't put 1 =Li2O1 X Li2O ✔️
2.Dont put the charge (cuz it's neutral) Li2+O- ❌ LiO✔️ |
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Example of ionic compound |
Sodium chloride NaCl (salt) Sodium fluoride NaF (toothpaste) Sodium bicarbonate NaHC03 (baking soda) |
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Describe the formation of ..... |
Element: electron configuration ---lose/gain--→ion electron configuration Na:2,8,1 ---loses--→2,8 |
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Why don't group 8 form ions /bond? |
They're already stable . |
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Ionic compound other name |
Cubic unit cell / Ionic lattice / Giant 3D structure / regular lattice structure |
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Symbol |
NaCl,Cas |
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Word equation |
Lithium fluoride, Sodium chloride |
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Draw a diagram how this atom gain a stable outershell. |
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When group A react with group B draw the diagram. |
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When element A react with B |
Draw the neutral atom (combined by +) first then the ion (bracket + charge). |
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Covalent bond |
When element share electron to be stable. (Non metal and non metal) |
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Example of covalent bonding |
Carbon dioxide Co2 (soft drink) Water H2O Meghan CH4 (Fuel) |
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How many covalent bond for ..... |
So for this one just count how many electron the element need. Example: fluorine need 1 so it will make 1 bond. Oxygen need 2 so it will make 2 bond. Or Divide the electrons used in the bonding with 2. For example Na is 1 Cl is 1 = 2/2=1 |
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Covalent diagram |
Use dot and cross only outer shell isoke. Make sure each element have 8 electron |
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Ionic diagram |
Another question will be like this. So draw the neutral atom first than the ion like ionic |
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What inert noble gas structure does .... Atom have? |
This means kalo atom itu jadi ion dia bakal mirip siapa. Misalnya Carbon itu 2,6 kalo dia jadi ion jadi 2,8 yaitu sama kek neon 2,8. |
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Metal |
High mp. Good conductor solid and liquid. |
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Ionic compound |
Good conductor in liquid only (Because in solid the ion cannot move it vibrate) Soluble High MP and BP (Strong force to break between ions) |
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Molecular= |
Macromolecule |
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Electron distribution for ion |
Ion = stable configuration (2/2,8/2,8,8) |
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What do you think about the distribution? |
....gain....lose |
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Is molecule Ionic or covalent? |
ITS COVALENT |
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One bond = .... Electron |
2 electron |
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Molecule meaning |
A group of Atoms held together by covalent bonds |
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Stable meaning |
Full outer shell |
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1 st 2 nd 3 rd Shell electrons |
288 |
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Ionic compound formula charge trick |
Cross em |
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Molecule / simple molecular substance |
Low melting point (Weak covalent bond between molecule) Don't conduct electricity (No free electrons and no electric charge) |
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Giant covalent structure |
Regular repeating structure
Strong High MP and BP (Strong covalent bonds between molecule) Don't conduct electricity (No free electrons and no electric charge) except graphite |
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Properties of graphite |
Soft and slippery (Slide between layers because weak attraction) Can conduct electricity and heat (Have free electrons) High MP and BP (Strong force between molecule) |
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Mettalic bonding |
Atoms in a regular pattern Hard High MP and BP (Strong force between free electrons and cation.) Conduct electricity and heat (Free electrons) Malleable Ductile (Make into thin wire) (Layers can slide) |
