Bill tried the science
True or False a low melting point is one property of molecular compounds.
True
True or False a nonpolar bond is formed when two atoms share electrons unequally.
False
A nonpolar bond is formed when two atoms share electrons unequally.
False
What is a double bond?
two pairs of electrons shared between two atoms
Ions that are made of more than one atom are examples of
polyatomic ions.
Ionic compounds are electrically
Magnesium bromide is an ionic compound with the chemical formula MgBr2. What does the “2” tell you?
There are two bromide ions for every magnesium ion.
Which of the following groups contains the most reactive elements?
the alkali metals
Why are alloys generally used to make everyday object?
Alloys are often stronger and less reactive than pure metals
Which of the following is a property of ionic compounds?
They form hard, brittle crystals.
An ionic bond is the attraction between
oppositely charged ions.
Electrons involved in bonding between atoms are
valence electrons.
Orderly crystal shapes, high melting points, and electrical conductivity when dissolved in water are properties of ionic compounds.
Magnesium bromide is an ionic compound with the chemical formula MgBr2. What does the “2” tell you?
There are two bromide ions for every magnesium ion.
A chemical bond formed when two atoms share electrons is called a(n)
covalent bond.
True or False when electrons are transferred between two atoms, a covalent bond is formed.
False
Ions that are made of more than one atom are examples of
polyatomic ions.
Which is a property shared by most molecular compounds?
Low melting point
Ionic compounds are electrically
Metallic bonding is
an attraction between positive ions and electrons
In the chemical formula for an ionic compound, which item is written first?
A chemical bond formed when two atoms share electrons is called a(n)
covalent bond.
The chemical name for the compound with the formula Na2S is
A low melting point is one property of molecular compounds.
True
Why are alloys generally used to make everyday object?
Alloys are often stronger and less reactive than pure metals