The subatomic particle that is represented by dots in our Bohr models.
What is ELECTRONS
100
A form of matter that contains only one kind of atom.
What is an ELEMENT
100
This forms when an atom gains or loses electrons.
What is an ION
100
The definition of matter.
What is ANYTHING that has MASS and VOLUME
200
I have a negative charge, weigh approximately 0 atomic mass units, and can be found orbiting around the nucleus of an atom.
What is an ELECTRON
200
Even though the 3rd electron shell can hold this many electrons, it feels full when it has this many electrons.
What is 18 electrons and 8 electrons
200
I run horizontally in the periodic table, like the x-axis on a graph.
What is a PERIOD
200
The two types of ions.
What are CATIONS (positively charged ions) and ANIONS (negatively charged ions)
200
This is what all matter is made up of (the building blocks of matter).
What is ATOMS
300
In a neutral atom, these 2 subatomic particles are found in equal numbers.
What are PROTONS and ELECTRONS
300
The reason why we write PEN when asked to draw a Bohr model.
What is because it helps us remember that we can just look at the periodic table to find Protons and Electrons, but we must CALCULATE the number of NEUTRONS.
300
Beryillium (Be), Magnesium (Mg), and Calcium (Ca) have this in common because they are found in the same group on the periodic table.
What is the NUMBER of VALENCE ELECTRONS
300
An atom of an element with the same number of protons, but different number of neutrons.
What is an ISOTOPE
300
Color, shape, texture, size, and state of matter (solid, liquid, or gas) are examples of this type of property.
What is a PHYSICAL PROPERTY
400
We both weigh 1 amu and are found in the nucleus, but only one of us is responsible for giving the nucleus of an atom a positive charge.
What are NEUTRONS and PROTONS
400
The way we calculate the number of neutrons in an atom of a given element.
What is subtract ATOMIC MASS - ATOMIC NUMBER
400
Most elements on the periodic table are classified as this.
What is METAL
400
This is the reason why LOSING ELECTRONS causes an atom to become a POSITIVELY CHARGED ION.
PROTONS ARE POSITIVELY CHARGED and ELECTRONS ARE NEGATIVELY CHARGED, so when an atom LOSES ELECTRONS there are MORE POSITIVE PROTONS than NEGATIVE ELECTRONS
400
Burning trash and leaving a piece of metal out in the rain to rust are examples of this type of change.
What is a CHEMICAL CHANGE
500
Where valence electrons are found and how many an atom needs to feel full.
What is on the outer shell and 8.
500
The element with 6 valence electrons, 2 electron shells/orbitals, and 8 protons.
What is Oxygen
500
This is the reason Noble Gases do not typically react with other elements.
What is NOBLE GASES have a FULL OUTER SHELL of ELECTRONS
500
The type of ion an atom of Sulfur (S) will form.
What is an ANION, because it will gain two electrons to achieve a full outer shell which will cause it to have a charge of negative 2.
500
This is why the sun IS an example of matter, but the light and heat from the sun IS NOT an example of matter.
What is because the sun has volume and mass, but light rays do not.