What are the names of the three subatomic particles found in an atom?
proton, neutron, electron
100
What does the atomic number of an element represent?
Atomic number represents the number of protons in an element.
100
What are 3 properties that a metal would be expected to have?
Has Luster
Conducts heat and electricity
Malleable
Reacts with Acid
Ductile
100
What are the corresponding names for the rows and columns of the Periodic Table?
rows are periods
columns are groups
100
Which group of the periodic table contains metals, nonmetals, and metalloids?
Group 14, 15, or 16
200
What are the charges on each of the subatomic particles?
Proton +1
Electron -1
Neutron 0
200
What does the mass number of an element represent in terms of the subatomic particles?
Mass Number = # of protons + # of neutrons
200
Where on the Periodic Table would you find elements that are classified as metalloids?
In a staircase or zig zag line between the metals and nonmetals.
200
What element is found in Period 4 Group 8?
Iron (Fe)
200
What is the name of the group of metals on the periodic table that are the most reactive?
Alkali Metals
300
How many protons and electrons are present in an atom with an atomic number of 18?
18 protons
18 electrons
300
In an atom of Fluorine (F), how many protons, electrons, and neutrons are present?
9 protons
9 electrons
10 neutrons
300
What nonmetal that is in Period 2 is would be considered unreactive?
Neon would not be reactive because it has 8 valence electrons.
300
Which group/family of nonmetals is the most reactive?
The halogen group are nonmetals that are the most reactive.
300
Which category of elements makes up the largest portion of the periodic table?
Metals make up the largest portion of the periodic table.
400
If an atom has 8 protons and another atom has 9 protons, can they be the same element?
No, if the number of protons is different then the atoms must be different.
400
In an atom of Aluminum (Al), how many protons, electrons, and neutrons are present?
13 protons
14 neutrons
13 electrons
400
At room temperature, in which state of matter would you not be able to find an element that was a metal?
You would not be able to find any metals that were gases at room temperature.
400
What is the name of the group of elements that have two valence electrons?
Alkaline Earth Metals
400
What is the reason that elements in the same group have similar chemical and physical properties?
Elements in the same group have similar chemical and physical properties because they have the same number of valence electrons.
500
List 3 ways in which a proton and electron are different.
Proton has a positive charge and an electron has a negative charge
Proton has a larger mass than an electron
Proton is located in the nucleus of an atom and an electron is located around the outside of the nucleus
500
In atoms of Oxygen-16 and Oxygen-17, what is the difference between the two atoms? What are atoms that have different mass numbers known as?
Oxygen-17 has 9 neutrons while Oxygen-16 has 8 neutrons.
Atoms of the same element with different mass numbers are known as isotopes.
500
The element silicon is brittle, conducts electricity only at certain temperatures, and has luster. How would it be classified?
Silicon would be classified as a metalloid.
500
How are the elements of the modern periodic table organized?
Elements are currently organized by their atomic number.
500
What is the name of the family on the periodic table that has a full shell of valence electrons?