Classifying Matter
physical or chemical property/change
Inside the Atom
Counting Atoms
Periodic Table
100
Baking Soda
Compound
100
All cooking process result in ___________change.
Chemical
100
Which of the 3 subatomic particles have a negative charge ?
electrons
100
What's the number called at the front of the compound symbol ?
Coefficient
100
The periodic table is arranged by _________
The number of protons
200
Milk
Mixture (homogenous)
200
Physical Properties can usually be observed with our ____________
5 senses.
200
How can one calculate for the number of neutrons?
Atomic Mass Number - Atomic Number
200
How many different types of atoms are present below:
Al2(SO4)3
3 types:
Al, S, O
200
On the periodic table, the columns are known as ______ and the rows are known as _________
Group/Family; Periods
300
mixture
300
Sugar dissolving in a glass of water.
Is this describing a physical or chemical change ?
Physical Change
300
Which subatomic particles have practically no mass ?
electrons
300
How many total atoms are present for the compound below:
2 C6H5N3
Total of 28 atoms
300
Name 3 major properties of metals
-Great heat/electricity conductor
-Malleable
-Ductile
-Shiny
-Solids at room temperature
400
Graphite
Element (made of pure carbon)
400
Mr. Yang is heavier than Seamus.
Is this a quantitative or qualitative physical property observation ?
Qualitative Observation
400
What makes the Group 1 Alkali Metals and Group 17 Halogens so reactive ?
Group 1 Alkali Metals have 1 valence electron, Group 17 Halogens have 7 valence electrons, which makes each of them 1 valence electron away from reaching the most stable octet (8 valence electrons)
400
List all the atoms present and the number of each atom for the compound below:
2NH₄HCO₃
N: 2
H: 10
C: 2
O: 6
400
How many total metalloids are there ? (Take a look at your periodic table)
7 : B, Si, Ge, As, Sb, Te, At
500
Bronze
mixture (homogenous)
500
Give me 3 signs of a chemical change taking place
Any 3 of the following:
-Change of color
-Change of odor
-Bubbles/Gas formation
-New solid is seen (precipitates)
-Change in temperature
500
How many valence electrons does carbon have ? What will carbon do with its valence electrons ?
4 valence electrons.
Carbon can either lose OR gain 4 more.
500
List all the atoms present and the number of each atom for the compound below:
2Ca3(PO4)2
Ca: 6
P : 4
O: 16
500
Which two groups on the periodic table are the most reactive ?
Alkali Metals (Group 1) and Halogens (Group 17)