One mole of a substance contains 6.02 × 1023 molecules. This number is known as _______.
Answer: reversible reaction
One mole of a substance contains 6.02 × 1023 molecules. This number is known as _______.
Answer: reversible reaction
Answer: reversible reaction
The amount of heat needed to raise one gram of a substance 1°C is known as _______.
The amount of heat needed to raise one gram of a substance 1°C is known as _______.
Answer: Avogadro's number
The water strider skates along the surface of water due to a property of liquids called _______.
The water strider skates along the surface of water due to a property of liquids called _______.
Answer: specific heat
In the equation C6H12O6 ? 6CO2 + 6H2O, C6H12O6 is the _______.
In the equation C6H12O6 ? 6CO2 + 6H2O, C6H12O6 is the _______.
Answer: surface tension
The attraction between a slight positive charge on a hydrogen atom and the slight negative charge of a nearby electronegative atom is a _______.
The attraction between a slight positive charge on a hydrogen atom and the slight negative charge of a nearby electronegative atom is a _______.
Answer: reactant
Of the different types of chemical bonds, the strongest bond in biological systems is the _______ bond.
Of the different types of chemical bonds, the strongest bond in biological systems is the _______ bond.
Answer: hydrogen bond
Molecules that have an unequal distribution of electric charge are called _______ molecules.
Molecules that have an unequal distribution of electric charge are called _______ molecules.
Answer: covalent
The electronegativity of an atom depends upon the number of _______ and how far the _______ are from the nucleus.
The electronegativity of an atom depends upon the number of _______ and how far the _______ are from the nucleus.
Answer: polar
The molecular weight of glucose (C6H12O6) is _______.
The molecular weight of glucose (C6H12O6) is _______.
Answer: protons; electrons
A _______ is two or more atoms linked by chemical bonds.
A _______ is two or more atoms linked by chemical bonds.
Answer: 108
The tendency of atoms in stable molecules to have eight electrons in their outermost shells is known as the _______.
The tendency of atoms in stable molecules to have eight electrons in their outermost shells is known as the _______.
Answer: molecule
______ occurs when one atom, such as 14C, is transformed into another atom, such as 14N, with an accompanying emission of energy.
______ occurs when one atom, such as 14C, is transformed into another atom, such as 14N, with an accompanying emission of energy.
Answer: octet rule
The chemical properties of an element are determined by the number of _______ its atoms contain.
The chemical properties of an element are determined by the number of _______ its atoms contain.
Answer: Radioactive decay
The sum of the atomic weights in any given molecule is called its _______.
The sum of the atomic weights in any given molecule is called its _______.
Answer: valance electrons
Every atom except for _______ has one or more neutrons in its nucleus.
Every atom except for _______ has one or more neutrons in its nucleus.
Answer: mass number
Oxygen and carbon are defined as different elements because they have atoms with a different number of _______.
Oxygen and carbon are defined as different elements because they have atoms with a different number of _______.
Answer: hydrogen
One dalton is the same as the mass of one _______.
One dalton is the same as the mass of one _______.
Answer: protons
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