Answer:
water is <u>polar </u>because oxygen is more electronegative than hydrogen
Explanation:
Water is polar covalent compound because of large electronegativity difference between oxygen and hydrogen. If the electronegativity difference is 0.4 or less than 0.4 the covalent compound will be non polar.
Covalent Compound:
It is formed by the sharing of electron pair between bonded atoms.
The atom with larger electronegativity attract the electron pair more towards it self and becomes partial negative while the other atom becomes partial positive.
For example:
In water the electronegativity of oxygen is 3.44 and hydrogen is 2.2. That's why electron pair attracted more towards oxygen, thus oxygen becomes partial negative and hydrogen becomes partial positive and water becomes polar.
In chem it usually would be but it depends on your units and the instructions
Answer:
See the explanation below, please.
Explanation:
In redox reactions (oxide reduction) the transfer of electrons between compounds occurs.
In oxidation, electrons are lost (positive charge increases). Example:
Mg ---> Mg2 + + 2 e- (passes from Mg ° to Mg 2+)
On the other hand in the reduction, electrons are gained (negative charge increases or the positive one increases). Example:
Cl2 + 2e- ---> 2 Cl- + 2 e- (passes from Cl ° to Cl-)
The correct answer is 'condensation'. For instance, when you have a cold liquid in a glass, the water vapor in the air changes from a gas to a liquid, or condenses, to form droplets on the sides of your cup.
Hope this helps!
Answer: Aluminium
Explanation: Aluminium metal has a lower density than copper. So, for the same volume of metal used to build a model airplane, the aluminium plane would be very lightweight while that of copper would be heavy. The lightweight airplane will fly easily.
