Atoms 1
What are the three subatomic particles?
Protons, Neutrons and electrons
The atomic number of Mn
25
A pure substance that cannot be broken down
Element
A table of all the known elements
periodic table
Name the three types of radiation
Alpha, Beta and Gamma
An atom has the same number of _________ and _________
Protons and Electrons
The mass number of Be
9
Anything made up of particles
matter
The smallest possible unit of an element
atom
If the temperature of a mixture increases the reaction is called?
Exothermic
Name 3 elements on the periodic table that are non-metals
H, He, C, N, O, F, Ne, P, S, Cl, Ar, Se, Br, Kr, I, Xe, Rn
The number of neutrons in F
9
Two or more atoms bonded together
compound
neutrons
If the temperature of a mixture decreases it is called?
Endothermic
A proton has a _________ charge. An electron has a ___________ charge. And a neutron has a ___________ charge
proton = positive
electron = negative
neutron = neutral
The name of an element in the alkali metals
lithium, sodium, potassium, rubidium, francium, cesium
What is an isotope?
An isotope is an atom with a different number of neutrons but the same number of protons.
Force that holds atoms together in a molecule
atomic bond
If a pH indicator shows a substance is at level 2 is it an acid or a base?
Acid
How do you know how many neutrons are in an atom?
Atomic mass
BONUS: atomic mass - atomic number
The name of a group 2, period 4 element
Calcium
An atom that has a charge because the number of electrons is different to the number of protons
Ion
The number of protons in an atom and position on the periodic table
Atomic number
R_________ (s_______ substances) → P________ (substances f________)
Reactants (starting substances) → Products (substances formed)