Mid summative 1-2 answers 2011
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Transcript of Mid summative 1-2 answers 2011
What is it? Rearrange the symbols for the elements and use the clues provided to figure out the words.
1. You need this to see!Sodium + Titanium + Rhenium
2. You or meSulfur + Nitrogen + Phosphorous + Oxygen + Erbium
3. Vacation homeCalcium + Indium + Boron
4. Don’t gamble on this one!Erbium + Polonium + Potassium
1. You need this to see!Sodium + Titanium + Rhenium
2. You or meSulfur + Nitrogen + Phosphorous + Oxygen + Erbium
3. Vacation homeCalcium + Indium + Boron
4. Don’t gamble on this one!Erbium + Polonium + Potassium
The answers are …
Na + Ti + Re RETINA
S + N + P + O + Er
PERSON
Ca + In + B CABIN
Er + Po + K
POKER
Which elements are in the following substances?
Substance Chemical Formula
Names of elements
Water H2O Hydrogen, Oxygen
Sucrose C12H22O11 Carbon, hydrogen,
oxygenOzone O3 Oxygen
Lead acetate Pb(C2H3O2)2 Lead, Carbon,
Hydrogen, Oxygen
Ammonium carbonate
(NH4)2CO3 Nitrogen, Hydrogen,
Carbon, Oxygen
What is the difference between Co and CO?
•Co is the symbol for the element Cobalt
•CO is the symbol for 2 elements, Carbon and Oxygen
Which are substances?
•Ni•Co•Fe
•CO
•CaCO3
•MgSO4
Why are they a substance?
Each is a form of matter that is
different from the other forms of
matter
How are elements & matter related?
Elements are the building
blocks of matter
Why was the mystery mixture a chemical
reaction?A chemical reaction is the combination of 2 or more
substances that results in a new substance. We combined the
mystery mixture with water and a gas (bubbles) formed which is a
new substance
Atomic Model
In what period would you find this
element?
In what group would you find this
element?
Name of element
4 2 3
2 6 7
Calcium
Oxygen
Chlorine
Periods are determined by number of orbitals (outer rings) found in an atomic model
Groups are determined by number of electrons found in the outer orbital of an atomic model
Name of the element can either be determined by looking at the number of protons which is the
atomic number of the element OR using the period and group to locate it on the periodic table
• Atomic number – 16• Atomic mass –
54.938• Protons – 16• Neutrons – 39• Electrons - 16
• Atomic number – 19• Atomic mass –
39.098• Protons – 19• Neutrons – 20• Electrons - 19
16
SSulfur
54.938
19
KPotassium
39.098