Exploring Periodic Table Trends and Bonding Types

What results from atoms bonding together?

• Formation of molecules

• Decrease in atomic number

• Increase in electron negativity

• Reduction in atomic mass

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NGSS.MS-PS1-1

NGSS.MS-PS1-5

Which elements are known for their strong desire to lose an electron?

• Noble gases

• Alkali metals

• Halogens

• Transition metals

What type of bond is formed when sodium and chlorine combine?

• Metallic bond

• Ionic bond

• Covalent bond

• Hydrogen bond

In an ionic bond, what happens to the electron configuration of sodium?

• It loses an electron

• It gains an electron

• No change occurs

• It shares an electron

What is a characteristic feature of covalent bonds?

• Electron removal

• Electron pairing

• Electron sharing

• Electron transfer

Which molecule is an example of a polar covalent bond?

• H2O

• Fe

• NaCl

• O2

What causes the polarity in a polar covalent bond?

• Unequal sharing of electrons

• No sharing of electrons

• Equal sharing of electrons

• Complete transfer of electrons

What is a key property of metallic bonds?

• Electron sharing in a communal pool

• Electron transfer between atoms

• Electron pairing

• Electron isolation

Why are metals malleable and conductive?

• Due to ionic bonding

• Due to hydrogen bonding

• Due to covalent bonding

• Due to metallic bonding

What happens when you bend a bar of salt?

• It breaks due to rigid bonds

• It becomes malleable

• It conducts electricity

• It bends without breaking