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Science Chemical Bon
Question | Answer |
---|---|
What are the three types of bonds? | Covalent, ionic, and metallic |
Covalent bonds can be either __________ or _________? | polar bonds and non-polar bonds |
What is a non-polar bond? | An unequal sharing of electrons |
What is a polar bond? | an equal share of electrons |
Atoms bond by gaining, losing, or sharing __________? | electrons |
What is an ion? | a negative or positive share of an electron |
What is an ionic bond? | forms between a metal and a non-metal by the transfer of electrons |
What are some characteristics for ionic bonds? | - high melting points - form crystal latis structure |
Are valence electrons shared or transferred in an ionic bond? | transferred |
What is the relationship between protons and electrons in a neutral atom? | same # of protons and electrons |
Explain why atoms that lose electrons form positive ions? | When an atom loses electrons it now has more protons than electrons |
Metals have few valence electrons and form _________ ions? | positive |
Why do metals in groups 1 & 2 react very easily? | They want to have a full outer energy level |
How are negative ions formed? | When an element gains electrons the # of electrons more than the # of protons |
What type of suffix is associated with negative ions? | -ide |
Atoms of no-metals lose or gain electrons ? | gain |
What do halogens release when they gain an electron? | energy |
Is an ionic compound charged? Why or why not? | overall net charge equals zero |
What is a covalent bond? | A bond between non-metals |
What are some characteristics of covalent bonds? | - low melting point - form diatomic non-metals |
How do two non-metals bond? | sharing electrons |
Which bond shares electrons? | covalent |
What bond transfers electrons? | ionic |
What bond has prefix? | covalent |