Exam (elaborations)
Atoms and bonding Questions and Answers
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Exam of 2 pages for the course Atom at Atom (Atoms and bonding)
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Atoms and bondingPositive ion - answer When an atom loses an electron, it becomes a..?
Polyatomic ions - answer Ions that are made of more than one atom are examples of..?
Lithium oxide - answer What is the chemical name for the compound with the formula
Li2O?
They form hard, brittle crystals with characteristic shapes - answerWhich is a
characteristic property of ionic compounds
Covalent bond - answerA chemical bond formed when two atoms share electrons is
called..?
3 pairs of electrons shared between 2 atoms - answerWhat is a triple bond?
Low melting points - answerProperty shared my most molecular compounds?
Don't break up into ions - answerMolecular compounds don't conduct electricity
because they
Sometimes polar - answerMolecules that contain two polar bonds are..?
Atom - answerSmallest particle of an Element is..?
Ductile - answermeans the metals can be pulled into him strands o wire
Positive ion - answerIn a chemical formula for an ionic compound, what is written first?
Electrons move in specific obits around the nucleus of an atom - answerNOT part of
Dalton's atomic theory
An atoms positive charge must be clustered in a tiny in region in its center...nucleus -
answerRutherford's gold foil experiment, most positively charged particles passed
through the foil, but a few deflected. This result caused him to infer...?
8 - answerGreatest number of valence electrons in an atom
Bohr - answerThe series of electron orbits in___ model resembles planets orbiting the
sun or onions
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