atoms Flashcards
What is an atom?
Is the smallest particle of matter, that cannot be broken down further. [by chemical means]
What is an Element?
An element is a structure made up of only by one type of atoms.
What is an Compound?
A compound is a structure that contains more than 2 types of atoms, that are chemically bonded.
Where is the nucleus in an atom?
The nucleus is located in the centre of the atom.
Which particles does the nucleus have?
The nucleus has protons and neutrons.
What is proton number?
Proton number refers to the number of protons in the nucleus.
What is the particle make up of the nucleus?
In the nucleus there are protons which are positively charged and neutrons which are neutrally charged.
What is atomic number?
Atomic number refers to the number of protons in the nucleus of the atom.
What are protons?
Protons are positively charged.
What are neutrons?
Neutrons are neutrally charged.
What are electrons?
Electrons are negatively charged.
What is an Isotope?
An isotope is a atom where there is one more proton, so there is an imbalance.
What is an Radioisotope?
An radioisotope is an isotope that is radioactive.
What are the uses for radioisotopes?
Xrays, treating food, nuclear power plant.
What machine is used to measure radioactivity?
Geiger counter.
