Chemistry: Atoms and Elements Flashcards
Describe the features and location of a proton
Positively charged
Around the same mass as a neutron
Located in the nucleus
Describe the features and location of a neutron
No charge
Around the same mass as a proton
Located in the nucleus
Describe the features and location of an electron
Negatively charged
1/2000th the mass of a neutron
Located in the shell/orbit around the nucleus
What is an atom?
The smallest unit of matter which forms a chemical element
Made up of protons and neutrons in the nucleus, with electrons orbiting
What is an element?
A pure substance where all the atoms are the same
Found on the periodic table
What is a molecule?
Two or more atoms chemically bonded together
Can be the same type of atom or different type
What is a compound?
A pure substance made with more than one type of atom chemically bonded together
What makes a gold atom a gold atom?
The number of protons in the nucleus of an atom
What is atomic number?
The number of protons in the nucleus of the atom.