Think and answer
liquid flows easily. Why?
The intermolecular space between the molecules in solids is the least. Explain.
A solid changes to a liquid on heating. Why?
A gas changes to a liquid on cooling. Why?
As magnesium burns in oxygen to produce magnesium oxide, there is no change in mass. Explain.
Answers
Answer:
wait and follow me.....
liquids flow so the molecules also flow
with the liquid and have little space between them
Answer:
Liquids flow easily because the forces between liquid particles are weaker than the forces between solid particles. This means that liquid particles are further apart and can move about more easily. Since the particles can move, the liquid can flow and take the shape of its container.
When a solid is heated, the particles are given more energy and start to vibrate faster. At a certain temperature, the particles vibrate so much that their ordered structure breaks down. At this point the solid melts into liquid.
Why does a gas change it to liquid on cooling? It is these partial charges that allow matter to connect together in solid, liquid, or gaseous form. However, these interactions are weakened when thermal energy is added.
Explanation:
When the magnesium metal burns it reacts with oxygen found in the air to form Magnesium Oxide. A compound is a material in which atoms of different elements are bonded to one another. ... Magnesium gives up two electrons to oxygen atoms to form this powdery product. This is an exothermic reaction.