Answer is:
It is likely soluble in water.
It will likely light up a bulb in a conductivity apparatus (CaO(l)).
It will likely have a high melting point.
1) Calcium oxide (CaO) has ionic bonds between calcium cations (Ca²⁺) and oxygen anions (O²⁻). It reacts with water and form calcium hydroxide:
CaO(s) + H₂O(l) → Ca(OH)₂(aq).
2) Ionic solid calcium oxide dissolved in water conduct electricty due to the dissociation Ca(OH)₂(aq) → Ca²⁺(aq) + 2OH⁻(aq).
3) Because it has strong ionic bonds, it has high melting point (around 2600°C).
Answer:
The bottle is labeled pure so it probably is pure.
Explanation:
Although coal and diamonds are both composed of carbons alone, they differ in their properties because of the bonds present in each substance. Diamonds are composed of covalent bonds which are strong and is crystalline in nature which makes it sturdier. Coal is amorphous which allows the slipping of irregular layers to each other making coal brittle
<span>The answer is deceleration. Acceleration is the general term to refer to the change in velocity. Acceleration = change in velocity / change in time. When you want to highlight the fact that the change in velocity is a decrease in the magnitude, you can use the term deceleration, which means that the acceleration is negative.</span>
Hi! I think the answer is option B. I hope
this helps, Goodluck :)
