WorksheetsAtom Level 3 Study & Retake
Total questions: 20
Worksheet time: 14mins
Imagine you have a beautiful gold ring. What is the smallest unit of gold in that ring that still retains (keeps or has) the properties of gold?
A. An atom
B. A compound
C. An electron
D. A molecule
What is primarily responsible for the chemical properties (how it bonds) of an atom?
Proton
Neutron
Electron
Protons and Neutrons
The magic number when atoms bond is either 0, 2, or or what other number?
(a)
Which rule explains the stability of atoms when they have eight electrons in their outer shell?
Quantum Rule
Duplet Rule
Octet Rule
Electron Affinity Rule
Which group of elements is known for having a full outer electron shell, making them highly stable and unreactive?
Group 1: Alkali Metals
Group 2: Alkaline Earth Metals
Group 7: Halogens
Group 8: Noble Gases
Which element would react similar to Si?
Which element would Na most likely form a "happy" compound with?
F
C
N
H
Explain why there are infinite number of compounds that can be made.
When two or more different elements bond, something totally new is made.
In a chemical formula, the presence of uppercase letters followed by lowercase letters usually indicates the number of distinct elements. For instance, H2O contains how many different elements?
1
2
3
4
19.What characteristic is shared by CO₂ (carbon dioxide), HCl (hydrochloric acid), and NH₃ (ammonia)?
A. CO₂, HCl, and NH₃ are all mixtures.
B. CO₂, HCl, and NH₃ are all elements.
C. CO₂, HCl, and NH₃ are all compounds.
D. CO₂, HCl, and NH₃ are all metals.
In the context of baking soda, which is chemically known as Na₂CO₃, how many different types of elements are present in this compound? List your answer on the line.
(a)
Which of the following models correctly represents phosphorus trichloride (P₃Cl₃) ? (Note: This is not a stable molecule)
Which of the following is the smallest unit of a chemical element?
Atom
Molecule
Which of the following images would represent a COMPOUND?
Match the following
Magic Number for Atoms
8
Valence Electrons for Na
1
Bonds between Oxygen and Mg
2
Number of Protons for Boron (B)
5
Match the following
Group Number
#valence electrons
Period Number(Row)
#of rings
Determines the atom you have
#protons
Smallest part of an element
atom
Smallest part of a compound
molecule
An element is different than a compound because an element has 1 capital letter, where a compound has _ (use the number) capitals or more.
(a)
Match the following
Group 1, 2, 3
Givers
Group 4
Give or Take
Group 5,6,7
Takers
Group 8
Neither, won't bond
