Water solubility and polarity

What is the chemical formula for water?

• H2O

• CO2

• O2

• H2

Tags

NGSS.MS-PS1-1

In an ionic bond, what types of elements are involved?

• Metals and nonmetals

• Nonmetals only

• Metals only

• Gases only

Are covalent compounds always soluble in water?

• Yes

• No

• Sometimes

• Never

Where is the majority of the negative charge on the water molecule?

• Around hydrogen

• Around oxygen

• Evenly distributed

• At the center

What is the electron density model used to represent?

• Atomic mass

• Electron presence

• Molecular weight

• Atomic number

Tags

NGSS.MS-PS1-1

What is the charge on the hydrogen end of a water molecule?

• Partial positive

• Partial negative

• Neutral

• Completely negative

Tags

NGSS.MS-PS1-1

What is the result of uneven electron density in a molecule?

• Partial positive and negative ends

• Complete neutrality

• Complete positivity

• Complete negativity

Tags

NGSS.MS-PS2-3

What is the process called when an ionic compound splits into ions as it dissolves in water?

• Evaporation

• Condensation

• Dissociation

• Sublimation

What is the polarity of Alka-Seltzer based on the demonstration?

• Non-polar

• Polar

• Ionic

• Neutral

The universal solvent,​ (a)   , is comprise of two ​ (b)   atoms that have partial ​ (c)   charges and one ​ (d)   atom that has a partial ​ (e)   charge.

• water
• hydrogen
• positive
• oxygen
• negative