Are these "statements?"

AJH$%^#@!

"It is true that AJHGJH&#HJGJ" is not grammatical. So it is not a statement.

A chicken is a song that weighs ten tons.

It is a complete and meaningful sentence, even if what it says is silly and must be false since a chicken is not a song. But it is still a statement.

Can you come to the party please?

Nope. Not a statement. This is a question. Using the criteria from above, it does not make sense to add "it is true that" to the beginning of this question.

Come here!

Not a statement but a command. remember, we are considering only DECLARATIVE sentences statements, not imperative sentences.

My dog.

Not a statement. This does not contain a verb, and thus is not a complete thought. It is a topic of conversation, but not a statement.

We all feel very sorry for you.

Although statements are often used to convey information, they can also be used for other purposes as well, such as expressing sympathy.

I am ordering you to stop talking in class.

Yes, it is a statement. It is actually both a statement and a command at the same time. The statement makes a claim about the command that is being issued at the same time the statement is made. This example tells us that some imperative sentences are also declarative.

One plus one equals three.

Yes, this is a statement. It happens to be a FALSE statement, but it is a statement nonetheless.

All statements are true.

Yes, this is a statement. It is a (false) statement about statements.

If it rains then the street will be wet.

Yes. A conditional statement about what happens when it rains.