Chemistry continued Flashcards
What is an atom?
A very small particle that makes up all things. Atoms have the same properties as the objects they make up.
What is an atomic number?
The number of protons in the nucleus of an atom. The atomic number determines which element an atom is.
What is a chemical symbol?
The standard way that scientists write the names of the elements, using either a capital letter or a capital followed by a lowercase letter. For example, carbon is C and copper is Cu.
What is an alchemist?
olden-day ‘chemist’ who mixed chemicals and tried to change ordinary metals into gold. Alchemists also tried to tell the future.
What is an investigation
the activity aimed at finding information
What is an observation?
information obtained by the use of our senses or measuring instruments
What is a scientist?
people skilled in or working in the fields of science; scientists use experiments to find out about the material world around them
What is an element?
a pure substance made up of only one type of atom
