a chemical substance that tastes sour and can sometimes burn the things that it touches acid rain is very bad.
bother
to cause someone to feel ill or in mild pain
Stop bothering me!
bully
a person who uses strength or power to harm or intimidate those who are weaker.
Greg is such a bully at school.
chase
(with ＂after＂) to run in an attempt to catch someone or something
My pet dog likes to chase cats.
chemistry
the scientific study of the structure of substances and of the way that they react with other substances
We do experiments in chemistry class each week.
experiment
a scientific test that is performed to study something and see how it reacts to different conditions
The scientists did experiments on many small animals.
ignore
not to notice or consider someone or something
Just ignore them and go on.
mean
not being kind to anyone or anything
The old lady is very mean. She never smiles.
remain
to be whatever is left over or behind after the larger part of something is gone
My e-mail address will remain unchanged.
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