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WorksheetsAtoms and Molecules
Total questions: 25
Worksheet time: 12mins
Which correctly describes the smallest amount of an element?
Atom
Molecule
Compound
Proton
How would H2O be classified? Check all that apply.
Atom
Molecule
Compound
How would O2 be qualified. Check all answers that apply.
Atom
Molecule
Compound
What does conservation of matter mean?
Matter cycles through an ecosystem and 10% is lost as you move through each trophic level.
Matter cannot be created, but can be destroyed.
Matter cannot be created nor destroyed, and cycles through ecosystems.
Matter and energy both move through ecosystems with 100% efficiency.
What is an element?
A pure substance that cannot be broken down.
Two atoms bonded together.
Two or more different types of atoms bonded together.
An molecule with an unequal distribution of charge.
What are atoms composed of?
Protons and electrons.
Protons, neutrons, and electrons.
Neutrons and electrons.
Ions, elements, and compounds.
How many H atoms are in H2O?
1
2
Which of the following is NOT a rule for matter?
All matter is made of atoms
Atoms bond to other atoms to form compounds
Atoms are on the macro scale
Atoms last forever
What is matter?
Matter has mass and takes up space.
Matter is charged atoms.
Matter has a charge and a mass.
Matter is polar molecules.
Which of the following statements is not true about an atom?
Atoms are always neutral in nature
Atoms are not able to exist independently
Atoms are the basic units from which molecules and ions are formed
Atoms aggregate in large numbers to form the matter that we can see, feel or touch
Which of the following has maximum number of atoms?
18g of H2O
18g of O2
18g of CO2
18g of CH4
What is an ion?
a charged atom
an atom with different neutrons
atoms with no protons
atoms with no electrons
Where are electrons found?
the nucleus
next to the neutrons
the proton
orbiting the nucleus
Which of the following is a chemical formula?
H2SO4
Si
Hg
C
Which of the following is a chemical symbol?
H2O
O
NaCl
FeO
