Separating Mixtures
Periodic Table 1
Atoms
Periodic Table 2
Random
100
True or False:
During decantation, the substance with the heavier density floats to the top!
FALSE
It sinks to the bottom. The substance with the lighter density floats to the top.
100
The majority of the elements on the periodic table are _____.
metals
100
True or False: Electrons can be found in the nucleus.
FALSE
There are protons and neutrons in the nucleus.
100
Which element has an atomic number of 1?
Hydrogen
100
If you'd like a balloon to float, fill it with _________!
Helium (He)
200
Name a mixture that can be separated using evaporation and condensation.
Salt and Sugar
Salt and Water
Pretty much water mixed with any soluble substance.
200
How many elements are on the periodic table?
118
200
True or False: Everything that exists in this world consists of atoms.
TRUE
200
Na is the chemical ___________ of Sodium.
symbol
200
True or False: Sodium chloride helps to make food taste more sour.
FALSE
Sodium chloride is table salt. Salt enhances the taste of food. If anything, it makes food more salty, not sour!
300
Name two methods we can use to separate a mixture of sand and paper clips.
Magnetism (Paper clips are magnetic.)
Sieving (You can sieve out the sand from this mixture.)
300
Who invented the periodic table?
Bonus 100 points if you can name where they were from.
Dmitri Mendeleev (Yes, I will accept just his last name.)
He was from Russia!
300
Atoms are the smallest particles that make up _______________.
elements
300
The atomic number of an element tells you how many ________ it has.
protons
300
What is it called when a substance goes from gas to solid?
DEPOSITION
400
Define insoluble and soluble.
Insoluble: Cannot dissolve in water.
Soluble: Can dissolve in water.
400
Columns in the periodic table organize elements into _____.
groups
400
What is the center of the atom called?
The Nucleus
400
Get out a periodic table. You have exactly 60 seconds to spell someone's name in the class using chemical symbols from the periodic table.
Eliska can decide whether you deserve the points...
400
What is it called when a substance goes from solid to gas?
SUBLIMATION!
500
Name all five separation methods.
Filtration
Decantation
Sieving
Magnetism
Evaporation & Condensation
500
Which element comprises 20 percent of the weight of all living organisms?
carbon
500
Name the three parts of an atom.
An extra 100 points if you can name the "charge" of each part (+ , - , 0).
protons - positive charge (+)
neutrons - neutral charge (0)
electrons - negative charge (-)
500
Which metal is so soft at room temperature that you could cut it with a knife?
Gallium (Yes, we did speak about this in class.)
500
Get out a periodic table. You have exactly 60 seconds to spell a type of food using chemical symbols from the periodic table.
Eliska decides whether you deserve the points...