This question is very hard and I'm having trouble with it

What are the main classifications or categories of elements in the periodic table?

Which of the following statements about the particles in a solution is true? A When an ionic solid mixes with water, its ions repel water molecules. B When a molecular solid mixes with water, the covalent bonds are broken.

Types of radioactive decay

Which landscape is located at 42°N 75° W

Which is an example of making a quantitative observation?

What would make bromine a group 17 element more similar to a noble gas

Use the following chemicals. ethanol, hexane, butanone, water, benzene, diethyl ether, ethyl acetate, acetone 4. Rank the solvents based on polarity, smallest to largest.

How long will it take for the concentration of xy to decrease to 12.5% of its initial concentration when the initial concentration is 0.100?

Which has a higher energy level 6d or 5s?

How far is the Earth for the moon?