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Worksheets8th MP.1 Review
Total questions: 28
Worksheet time: 18mins
What is the atomic number?
the number of protons
the number of protons and neutrons
the number of neutrons
the number of protons and electrons
Atoms have no electric charge because they...
Have an equal number of charged and non-charged particles
Have neutrons in their nuclei
Have an equal number of electrons and protons
Have an equal number of neutrons and protons
How do covalent bonds form?
Donating & receiving valence e- between atoms.
Opposite slight charges attract each other between compounds.
Scientists are still not sure how they form.
Sharing valence e- between atoms.
Graphite and diamond are both made of carbon nut their properties are very different. Why do they have such different properties?
The carbon atoms in graphite have less protons which make it softer
Graphite is made up of dark carbon atoms
The carbon atoms in diamond have more protons which make it stronger
They have different molecular structures
This model is called a...
Lewis Symbol
Bohr Model
Electrons involved in bonding between atoms are
closest to the nucleus.
valence electrons.
inside the nucleus.
positively charged.
Why do covalent bonds share electrons?
To become ions
To become more polar
To attain a noble-gas configuration
To increase their atomic numbers
