Answer:
a solid in which state of matter are particles packed tightly together in fixed positions.
Explanation:
hope this helps
Answer: The correct option is D.
Explanation:
In option A:
The names of both the ions are correct but the representation of lithium ion is wrong. Lithium forms a cation and here lithium anion is shown. So, this option is not correct.
In option B:
Here, the representation and name of
is written wrong. This ion has a representation of
and is named as oxalate. So, this is not correct.
In option C:
The representation of both the ions is correct but the name of
is chloride, not chlorate. So. this is not a correct option.
In option D:
The representation and names of both the ions are correct.
Hence, the correct option is D.
The melting of the solid wax to form liquid wax and the evaporation of liquid wax to form wax vapour are physical changes. The burning of the wax vapour is a chemical change. The wax vapour reacts with oxygen in the air to form new substances including carbon dioxide and ash.
The density of a liquid is the ratio of its mass to its volume. It is an extensive property even though mass and volume are both intensive properties. At a certain temperature and pressure, the density of a liquid is constant. The solution is as follows:
Density = Mass of liquid/Volume of liquid
Mass of liquid = Mass of liquid and cylinder - Mass of cylinder
Mass of liquid = 12 g - 10.8 g = 1.2 g
Density = 1.2 g/7.4 mL
Density = 0.162 g/mL
The answer is B. Hope it helps!