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Molecules & Elements
Electron Configuration & Mixtures
Compounds
Atoms
SURPRISE!
100
What is a substance with only one kind of atom?
An element.
100
What are the two parts of a solution?
A solvent & solute.
100
What is the chemical formula for carbon tetrabromide?
CBr₄.
100
List the subatomic particles and their charges.
Protons- positive charge Neutron- neutral or no charge Electrons- negative charge
100
What does the Law of Conservation of Matter state?
That matter can not be created nor destroyed.
200
What is a molecule?
The smallest particle of an element or compound.
200
What is known as the “universal solvent”?
Water.
200
What is the chemical formula for sodium iodide?
NaI.
200
Atoms that have the same number of protons but different numbers of neutrons are called what?
Isotopes.
200
Which of these is not a solution? A) Salt and water, B) Sugar and water, C) Sand and water, D) none of the above
C
300
What is the most abundant element in the universe?
Hydrogen.
300
What is the electron configuration for Zinc?
1s2 2s2 2p6 3s2 3p6 4s2 3d10
300
Can a compound be separated? If so physically or chemically?
Yes, chemically.
300
How do compounds and elements differ?
Elements have one kind of atom; compounds have different kinds of atoms.
300
Name all five properties of metals.
1. Malleable 2. Lustrous 3. Conducts heat 4. Conducts electricity 5. Ductile
400
What kind of elements has a full electron "shell" and therefore can't react with any element?
A noble/inert gas (with the exception of Xenon)
400
What is the electron configuration for Gold written in shorthand?
[Xe] 4f14 5d10 6s1
400
How are compounds different from mixtures?
Compounds have a fixed ratio of elements that are chemically bonded.
400
Elements in the same period have what in common?
They have similar arrangement of electrons.
400
What is the process called when a substance is changed directly form a solid into a gas?
Sublimation.
500
Name the following elements Sn, Pt, Hg, and Bi.
Tin, Platinum, Mercury, Bismuth.
500
What is the element ion that corresponds to this electron configuration (Xe)6s24f145d106p2?
Pb 2+ (Lead)
500
What is the chemical formula for potassium hydrogen sulfate?
KHSO₄.
500
Suppose an atom has 6 protons and 8 neutrons. Which element in the table is This atom an isotope of?
Carbon (carbon-14).
500
What is the full name of NaSCN?
Sodium Thiocyanate.