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If an atom has 7 electrons, how many are located in the second energy level?
H2O
iron rusting
5
neutron
oxygen
protein
electron
decreases the activation energy necessary to initiate the chemical change
How does an enzyme influence a biological reaction?
H2O
iron rusting
5
neutron
oxygen
protein
electron
decreases the activation energy necessary to initiate the chemical change
which particle in the nucleus of an atom has a neutral charge?
H2O
iron rusting
5
neutron
oxygen
protein
electron
decreases the activation energy necessary to initiate the chemical change
Which is the negatively charged particle located outside the nucleus of an atom?
H2O
iron rusting
5
neutron
oxygen
protein
electron
decreases the activation energy necessary to initiate the chemical change
Which represents a formula for a chemical compound?
H2O
iron rusting
5
neutron
oxygen
protein
electron
decreases the activation energy necessary to initiate the chemical change
Which is an example of a chemical reaction?
H2O
iron rusting
5
neutron
oxygen
protein
electron
decreases the activation energy necessary to initiate the chemical change
What is the reactant when paper burns?
H2O
iron rusting
5
neutron
oxygen
protein
electron
decreases the activation energy necessary to initiate the chemical change
Amino acids are the building blocks of which macromolecule?
H2O
iron rusting
5
neutron
oxygen
protein
electron
decreases the activation energy necessary to initiate the chemical change
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