Periodic Table History
__________ ideas form the modern atomic theory of matter.
A. John Dalton's
B. J.J Thompson's
C. Issac Newton's
D. Julius Ceasar's
A. John Dalton's ideas form the modern atomic theory of matter.
Elements within a group of the periodic table have similar chemical properties because...
A. they have the same number of valence electrons in their outer energy level.
B. they have the same number of protons in their outer energy level.
C. Both A and B
A. Elements within a group of the periodic table have similar chemical properties because they have the same number of valence electrons in their outer energy level.
What does a group tell you about elements?
They tell you...
A. the number of electrons an element has.
B. the number of electrons in an elements outer energy level (valence electrons).
C. the number of protons of an element.
D. how reactive an element is based on the number of electrons in an elements outer energy level.
E. both A and D.
D. A group tells you the number of valence electrons an element has and how reactive an element is based on those valence electrons that are found in the outer energy level.
What is an electron?
A. A positively charged subatomic particle.
B. A negatively charged subatomic particle.
C. The atomic theory of matter.
D. A valence electron.
B. An electron is a negatively charged subatomic particle.
Complete the sentence.
A neutron is a _________ charged subatomic particle.
A neutron is a neutrally charged subatomic particle.
________ discovered the electron when he was experimenting with gas discharge tubes.
A. Austin from State Farm
B. John Dalton
C. J.J. Thompson
D. Your uncle
C. J.J. Thompson discovered the electron when he was experimenting with gas discharge tubes; When conducting his experiment he noticed movement in a tube and called the movement cathode rays. The cathode rays moved from the negative end of the tube to the positive end. He realized these rays, electrons were negatively charged.
What is a group in the periodic table?
A. a row of elements in the periodic table.
B. a column of elements in the periodic table.
C. Neither A or B
A. A group is a column of elements in the periodic table that go up and down.
Periods tell you...
A. that every element in a given period have the same number of electron shells.
B. that every element in a period have the same number of valence electrons.
C. nothing
D. how the atomic theory of matter was formed.
A. Periods tell you every element within a given period have the same number of electron shells.
Valence electrons are...
A. the electrons on the outer energy level of a compound.
B. the electrons on the outer energy level of an atom.
C. the protons on the outer energy level of an element.
D. none of the above.
B. Valence electrons are the electrons on the outer energy level of an atom.
Group 2 Alkali Earth Metals
They are...
A. less reactive than alkali metals.
B. more reactive than alkali earth metals.
C. have two electrons on their outer energy level.
D. Both A and C
D. Both A and C; Alkali Earth Metals are less reactive than alkali metals and have two electrons on the outer energy level.
______ conducted the famous gold foil experiment.
A. Issac Newton
B. Lord Ernest Rutherford
C. My pet gerbil
D. John Dalton
B. Lord Ernest Rutherford conducted the famous gold foil experiment; He used a thin sheet of gold foil to shoot alpha particles through. Most particles passed through and some went straight back or went in another direction.
What is a period in the periodic table?
A. A row of elements in the periodic table.
B. A column of elements in the periodic table .
C. My pet gerbil.
A. A period is a row of elements in in the periodic table that go from left to right.
Complete the sentence
Group 1: Alkali Metal
They...
A. are the most reactive on the periodic table.
B. tend to give away one of their electrons when they form compounds.
C. the most unreactive on the periodic table.
D. Both A and B.
D. Both A ad B; Group 1 Alkali metals are the most reactive on the periodic table and tend to give away one of their electrons when they form a compound.
A proton is...
A. a negative charged atom particle.
B. a positively charged atom particle.
C. a neutrally charged atom particle.
D. none of the above.
B. A proton is a positively charged subatomic particle.
Unpaired valence electrons tells you...
A. how many covalent bonds an atom of an element will form.
B. My pet gerbil's favorite kind of food.
C. the group an element is in.
D. how many bonds an atom of a given element would like to form.
D. Unpaired valence electrons tells you how many bonds an atom of a given element would like to form.
_______ proposed a model of the atom that is similar to the model of the solar system.
A. Niels Bohr
B. Julius Ceasar
C. My pet gerbil
D. John Dalton
A. Niels Bohr proposed a model of the atom that is similar to the model of the solar system; in this model the electrons go around the nucleus like planets orbit around the sun. There are energy levels around the nucleus that holds a certain number of electrons. Level 1 can hold 2 electrons. Level 2 can hold 4 electrons. Level 3 can hold 18 electrons. Level 4 can hold 32 electrons.
Alkali metals are...
A. the most reactive elements in the periodic table.
B. elements that form compounds with other elements most easily.
C. unreactive elements in the periodic table.
D. Both A and B.
D. Both A and B; Alkali metals are the most reactive elements in the periodic table and form compounds with other elements most easily.
Covalent bonds form when...
A. an atom steals/donates an electron from another atom that only needs one electron to form a complete outer energy level.
B. an atom shares an electron with another compound that only needs one electron to form a complete outer energy level.
C. an atom shares an electron with another atom that only needs one electron to form a complete outer energy level.
D. my pet gerbil eats all of his food.
C. Covalent bonds form when an atom shares an electron with another atom that only needs one electron to form a complete outer energy level.
Ionic bonds form when...
A. an atom shares an electron usually from an atom that has only 1 valence electron.
B. an atom steals/donates an electron usually from an atom that has only 1 valence electron.
C. an atom steals/donates an electron usually from another atom that has only 2 valence electrons.
D. Both A and C.
B. Ionic bonds form when an atom steals/donates an electron usually from another atom that has only 1 valence electron.
How many electrons fill the first energy level of an atom?
A. 1
B. 2
C. 4
D. 8
E. None of the above
B. 2 electrons are needed to fill the first energy level of an atom.