The temperature at which a substance changes from the liq- uid state to the solid state is called the freezing point. The freez- ing point of the liquid state of a substance is the same temperature as the melting point of the solid state. For example, solid water melts at 0°C and liquid water freezes at 0°C.

Explanation:

6 0

3 years ago

Which compound has both ionic and covalent bonding?.

Nikitich [7]

Answer: Calcium carbonate is another example of a compound with both ionic and covalent bonds. Here calcium acts as the cation, with the carbonate species as the anion. These species share an ionic bond, while the carbon and oxygen atoms in carbonate are covalently bonded

Explanation:

4 0

3 years ago

Complete the matching exercise below by choosing the correct strength of each bond type in aqueous solution. 1. covalent bond 2.

AlexFokin [52]

1. covalent bonds are strong

2. hydrogen bonds are weak

3. Ionic bonds are weak

6 0

4 years ago

What is the difference between nitrite and nitrate

Dahasolnce [82]

Answer:

<u>Nitrite:</u>

Formula : NO₂⁻
1 nitrogen molecule and two oxygen molecules with an excess electron.
Angular shape

<u>Nitrate:</u>

Formula: NO₃⁻

1 nitrogen molecule and three oxygen molecules with an excess electron.
Trigonal planar structure.

$\rule[225]{225}{2}$

Hope this helped!

4 0

2 years ago