Download presentation
Presentation is loading. Please wait.
1
Foldables: Atoms Terms
2
The basic unit of matter
Atom The basic unit of matter It consists of a nucleus (with protons and neutrons) and electrons
3
Positively charged particles Found in the nucleus Mass: 1.0073 amu
Protons Positively charged particles Found in the nucleus Mass: amu (amu= atomic mass unit; 1amu= x 10^-24 g)
4
Particles found in the nucleus No electrical charge Mass: 1.0087 amu
Neutrons Particles found in the nucleus No electrical charge Mass: amu
5
Negatively charged particles Mass: 5.4858 x 10^-4 amu
Electrons Negatively charged particles Mass: x 10^-4 amu Found in a cloud outside the nucleus
6
The number of protons in the nucleus of an atom
Atomic number The number of protons in the nucleus of an atom In a neutral atom, the number of protons is equal to the number of electrons
7
Sum of the number of protons and neutrons
Mass number Sum of the number of protons and neutrons Mass number = protons + neutrons
8
Isotope Atoms of the same element that have the same number of protons but different number of neutrons
9
Atomic weight The average of the masses of all the naturally occurring isotopes of an element
10
A positively, or negatively, charged atom
Ion A positively, or negatively, charged atom Atoms become ions because they gain or lose electrons
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.