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☆☆☆☆☆Cards in this guide (5)
An atom does not easily lose or gain electrons if it has
An atom does not easily lose or gain electrons if is has an equal number of protons and electrons. The charges inside the atom cancel each other, making it neutral.
Diamonds are used to scratch glass chemical or physical change
This is a physical change. There is nothing that changes the components of either the diamond or the glass when the diamond is used to scratch glass.
True or false a surface that loses electrons becomes positively charged
That is a true statement.
If two atoms are bonded with a bond energy of 212 kJ what must be done to break the bond
212 kJ of energy must be added. hope this help ya
Is cutting paper change in shape
Take a piece of paper and cut it in half (anywhere will do) and you will have two pieces of paper - and your original piece of paper has changed shape.
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