Atoms Family
What is atomic mass.
The weight of an atom. The total of the protons and neutrons.
Neutrons have a ______ charge.
What is : uncharged/ neutral
two or more atoms together
Molecule
What two particles must be equal to form a neutral atom?
What is: protons and electrons
Elements are always made up of the same type of ?
Atoms
The positively charged particle in an atom.
What is : A proton
a substance made entirely of one kind of atom like hydrogen or helium
element
Give an example of a solid
wood, chair, pencil, book, ice
All substances are made of just one type of element?
No
heating something until it starts to bubble
boiling
The subatomic particles in the nucleus of an atom.
What is: neutrons and protons
Give an example of a gas
air, oxygen, water vapor, steam
What does atom means?
Indivisible
What particles make each element special?
The proton, neutron and electron gives unique properties.
At something gains heat , the particles also gain?
In an atom, which has a negative. charge ? A: nucleus B: proton C: neutron D: electron
What is: D, electrons
If an electron is added to a neutral atom, the total charge will become ________.
What is: Negative (ion)
It is Mg.
What is: the atomic symbol for Magnesium?
What is a particle?
What is: a tiny piece of matter
In gas are molecules bond together? True or false
False
What is the atomic number?
What is: The atomic number is the number of protons in an atom.
The nucleus of an atom has a _______ charge.
What is: positive
Which state of matter has molecules that are closely spaced?
Solid
How many elements are on the Periodic Table?
118
What is water ?
a Molecule