Test 4

The element with the lowest electronegativity in Period 3 is - 

• Na
• Cl
• Ar
• Mg

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What does electronegativity do as you go across a period?

• decrease

• no pattern

• stay the same

• increase

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Why does electronegativity decrease as you go down a group?

• As you go down a group, the outer electrons are further away from the nucleus

• As you go down a group, the nucleus is less able to attract electrons in a bond

• Both of these

• None of these

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following describes covalent bonds?

• Bonds form because of opposite charges

• electrons are shared to fill outer electron shells

• Electrons are transferred between atoms

• Covalent bonds are magical

Tags

NGSS.HS-PS1-2

For metals (groups 1-3), its easier to _____ electrons to have a full outer shell.

• gain

• lose

• share

Tags

NGSS.MS-PS1-5

An ionic bond is the attraction between:

• oppositely charged ions
• similarly charged ions
• neutral ions
• neutral atoms

Tags

NGSS.HS-PS1-2

A _______ is a charged particle because it has more or fewer electrons than protons.  When an atom _____ an electron, it becomes a positively charged ion.  When an atom ____an electron, it becomes a negatively charged ion.

• isotope, gains, loses
• isotope, loses, gains
• ion, loses, gains
• ion, gains, loses

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

In general, this type of bond will form a compound with a high melting point.

• Ionic
• Covalent

Tags

NGSS.HS-PS1-4

Which types of compounds dissolve easily in water?

• Polar and Nonpolar
• Polar and Ionic
• Nonpolar and Ionic
• Covalent and Nonpolar

If a molecule is said to be "polar," that means it

• has a partial charge (positive end and negative end)

• has no charge

• is a white bear