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WorksheetsAtoms
Total questions: 24
Worksheet time: 4mins
How many different particles are found in an atom?
5
4
3
2
Which particles orbit around the nucleus?
Neutrons
Electrons
Gases
Protons
How are atoms of different elements alike?
They are all made of protons, neutrons, and electrons
They have the same number of atoms
Same number of electrons
same number of protons
What makes an atom neutral?
Add more protons
Have the same number of protons and electrons
Different number of protons and electrons
Add more neutrons
What are chemical symbols?
A one-two letter abbreviation of an element
A random letter
A certain letter that represents the number of atoms
A letter random letter that represents the number of neutrons there are in an atom
What are compounds made of?
Two or more elements chemically combined
nucleus and protons
Atoms of the same element
Neutrons, protons, and electrons
How are compounds held together?
Bonds between electrons
Bonds between protons
Bonds between gases
Bonds between neutrons
What are reactants?
A substance that undergoes a change
A rock that turns into water
An element combined with another element
A combination of two molocules
What are products?
An answer to a multiplication problem
The result of a reaction
The result of your grade
What is a chemical formula?
The number of atoms and symbols in a compound
Two compounds combined
three molocules combined
Two molocules combined
What is a subscript?
A number
A number with how many elements there are
A number that indicates how many atoms of each element in a compound
A number that is printed for no reason at all
What happens to atoms in a chemical reaction?
atoms are destroyed
Atoms are created
Atoms are rearrange
all of the above
What is the most common element in the earth?
Hydrogen
Oxygen
nitrogen
Silicon
What is the most common element in the ocean?
Carbon
Oxygen
Sodium
Hydrogen
What is the most common element in the atmosphere?
Oxygen
Hydrogen
Nitrogen
Carbon
What is the most common element in living things?
Carbon
Oxygen
Hydrogen
Sulfur
How are atoms of different elements different?
They have more or less electrons
Different number of neutrons
Different number of protons
Different number of gases
How many atoms of hydrogen are found in a molecule of sugar, C6H12O6?
6
24
3
12
In a molecule of NaCl, which elements are present?
Sodium+carbon
Sodium+chlorine
Magnesium+carbon
Carbon+oxygen
Which one is a reactant? 2H2+O2—> 2H2O
H2
2H2+O2
O2
2H2O
In the formation of water, 2H2+O2—> 2H2O, how many atoms of hydrogen are on the reactant and product side of the equation?
2 and 2
2 and 7
2 and 100
4 and 4
Which subatomic particles are green in the diagram?
Neutrons
Protons
Electrons
Quarks
What do these atoms have in common?
same number of protons
Same number of electrons
Same number of neutrons
Both have same number of protons & electrons
How do we know there are different elements in the diagram above?
Quarks
Neutrons
Protons
Electrons
