Atoms
Elements
Chemical Compounds and Bonds
Isotopes
Completion Questions
100
This is the mass number for an atom that has 3 protons, 4 neutrons, and 3 electrons
What is mass number
100
This is the symbol for the element sodium
What is Na
100
This substance is formed by the chemical combination of two or more elements in definite proportions
What is a compound
100
Isotopes are atoms of the same element with the same number of protons and different number of these.
What is neutrons
100
Neutrons and _______________ are found in the nucleus of an atom.
What is Protons
200
These are found in the space surrounding the nucleus of an atom
What is electrons
200
This is the symbol for the element mercury
What is Hg
200
The two main types of bonds
What is ionic and covalent
200
Isotopes of carbon all have how many protons
What is 6
200
Of the three subatomic particles, _____________ are most involved in forming chemical bonds.
What is Electrons
300
These are protons, neutrons are electrons
What is subatomic particles
300
This is the number of electrons for Aluminum, which has an atomic number of 13.
What is 13 (same as # of protons)
300
This type of ion is formed when an atom LOSES electrons
What is positive
300
These isotopes are unstable and break down at a constant rate over time
What is radioactive
300
Because they have the same number of protons and electrons, all isotopes of an element have the same ______________ properties.
What is Chemical
400
The number of these subatomic particles tells us the atomic number
What is protons
400
The number of these two subatomic particles are added together to find the mass number of an element
What is protons and neutrons
400
This type of electron is available to form bonds
What is valence
400
An atom has this atomic number if it has 11 protons and 12 neutrons
What is 11
400
A chemical bond formed by the transfer of electrons is a(an) ________________ bond.
What is Ionic
500
Atoms have equal numbers of these so that the positive and negative charges even out
What is protons and electrons
500
The mass number of Neon (10 protons, 10 neutrons, 10 electrons)
What is 20
500
This bond is formed from sharing electrons
What is covalent
500
This is the mass number for a chlorine atom that has 17 protons and 18 neutrons
What is 35
500
When atoms share 6 electrons, they are joined by a ___________ bond.
What is Triple
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