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Which of these is MOST responsible for chemical reactions?
chemical change
Electrons in the highest occupied energy level of the atoms
physical change
a bond formed when atoms share electrons
products
burning wood
breaking a wooden ruler
chemical properties
Which of the following is an example of a physical change?
chemical change
Electrons in the highest occupied energy level of the atoms
physical change
a bond formed when atoms share electrons
products
burning wood
breaking a wooden ruler
chemical properties
Electrons in the highest occupied energy level of an atom determines an elements -
chemical change
Electrons in the highest occupied energy level of the atoms
physical change
a bond formed when atoms share electrons
products
burning wood
breaking a wooden ruler
chemical properties
When cars are left in a junk yard, what was once shiny steel turns into brown, brittle rust. What type of change is this?
chemical change
Electrons in the highest occupied energy level of the atoms
physical change
a bond formed when atoms share electrons
products
burning wood
breaking a wooden ruler
chemical properties
A melting ice cube is undergoing what type of change?
chemical change
Electrons in the highest occupied energy level of the atoms
physical change
a bond formed when atoms share electrons
products
burning wood
breaking a wooden ruler
chemical properties
What is a covalent bond?
chemical change
Electrons in the highest occupied energy level of the atoms
physical change
a bond formed when atoms share electrons
products
burning wood
breaking a wooden ruler
chemical properties
When you combine vinegar and baking soda, it gives off gas. The reactants are vinegar and baking soda, what is the gas
chemical change
Electrons in the highest occupied energy level of the atoms
physical change
a bond formed when atoms share electrons
products
burning wood
breaking a wooden ruler
chemical properties
Which of the following is an example of a chemical change?
chemical change
Electrons in the highest occupied energy level of the atoms
physical change
a bond formed when atoms share electrons
products
burning wood
breaking a wooden ruler
chemical properties
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