Which statement correctly describes the classification of chemical reactions into different categories?(1 point)
Responses
Not all reactions fit into a category, and some reactions can fit into more than one category.
All reactions fit into a category, and a reaction can fit into only one category.
Not all reactions fit into a category, and a reaction can fit into only one category.
All reactions fit into a category, and some reactions can fit into more than one category.
Not all reactions fit into a category, and some reactions can fit into more than one category.
Which statement correctly describes the classification of chemical reactions into different categories?(1 point)
Responses
Not all reactions fit into a category, and some reactions can fit into more than one category.
All reactions fit into a category, and a reaction can fit into only one category.
Not all reactions fit into a category, and a reaction can fit into only one category.
All reactions fit into a category, and some reactions can fit into more than one category.
Not all reactions fit into a category, and some reactions can fit into more than one category.
In a synthesis reaction, two atoms of sodium (Na) combine with one molecule of chlorine gas (Cl2) to produce sodium chloride (NaCl). How many molecules of sodium chloride are produced?(1 point) Responses
one
two
four
three
The correct answer is one.
In the decomposition of water, why is twice as much hydrogen as oxygen formed?(1 point)
Responses
Some oxygen gas escapes the reaction, and hydrogen gas is conserved.
There are two atoms of hydrogen and one atom of oxygen in a water molecule.
Hydrogen gas has two atoms, and oxygen gas has one atom.
Hydrogen atoms are twice the size of oxygen atoms.
The correct answer is: There are two atoms of hydrogen and one atom of oxygen in a water molecule.
Which component is transferred between substances in an oxygen-reduction reaction?(1 point) Responses.
protons
energy
oxygen
electrons
The component that is transferred between substances in an oxygen-reduction reaction is electrons.
The correct statement that describes the classification of chemical reactions into different categories is:
Not all reactions fit into a category, and some reactions can fit into more than one category.