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level: Level 1

Questions and Answers List

level questions: Level 1

Question	Answer
They have a metallic luster	Metals
The number of protons in the nucleus. More protons increased nuclear charged and increased attraction between the nucleus and electron.	Nuclear Charge
T or F Melting point is an intensive property	True
1/2 of the distance between nuclei of two atoms of the same element in a diatomic molecule.	Atomic Radius
The energy needed to remove the attraction of the nuclear charge and remove an electron (from a gaseous atom) is called.	Ionization Energy
T or F Cations has a lower Ionization energy	True
The reduction of attractive force of the nucleus for the outer electrons caused by electrons in energy levels between nucleus and the outer electrons.	Electron Shielding
What are the name of the elements under the Group 8A?	Noble Gases
In a GROUP TREND, as you go down, atomic size is __________	Increasing
In a GROUP TREND, as you go down a column, Ionization energy _______	Decreases
A positively charged ion	Cations
A negatively charged ion	Anions
In a PERIODIC TREND, as you go L TO R, atomic size is ________	Decreasing
Are the most reactive nonmentals	Halogens
In a PERIODIC TREND, as you go across period (L TO R), Ionization energy _______	Increases
T or F More protons increased nuclear charge and increased attraction between the nucleus and electrons.	True
T or F Anions are more likely to gain electrons	True
The ability of an atom to pull on the electron	Electronegativity
T or F Electronegativity increases going left to right across the periodic table.	True
T or F Energy is needed to remove an electron from an atom.	True
Anions has a higher Ionization energy	True
Groups labeled with an "A" are the ____________	Representative Elements
Located on the left side of the periodic table ang have the following properties: solids, metallic luster, good conductors, malleable and ductile	Metals
T or F Elements in the same period have consecutive atomic numbers but they differ predictably in their chemical properties.	True
Instead of ordering the elements by increasing atomic mass, Henry Moseley arranged them by ________	Atomic Number
The original periodic table was discovered by russian chemist named	Dmitri Mendeleev
During the mid 1800s there are about ________ known elements	Seventy
What is the meaning of the word Periodic?	means to exhibit a repeating pattern
An english physicist, responsible for the creation of the modern periodic table	Henry Moseley
One way to clarify the elements on the periodic table is by the ________ and __________ to which they belong.	Period - Group
Are the horizontal rows on the periodic table and are numbered 1 to 7	Period
T or F Cations are more likely to lose electrons	True
Are the vertical columns on the periodic table, numbered 1 to 8	Groups / Families
T or F Elements in the same group, usually have similar properties	True
They are good conductor of heat and electricity	Metals
T or F The properties of the representative elements tend to be "Largely Predictable" based on their position in the periodic table	True
The elements bordering the stain stepped line are called the ___________	Metalloids
The groups labeled with B are the ___________________	Transition Elements
T or F The properties of the transition metals are less predictable	True
T or F Some transition metals exist in nature as free compounds	True
What are the name of the elements under the Group 1A?	Alkali Metals
This elements are very reactive so they cannot be found in nature as free elements	Alkali Metals
What are the name of the elements under the Group 7A?	Halogens
T or F Non-metal tend to gain electrons in chemical reactions to gain the same number of electrons as the nearest noble gas	True
Are located on the right side of the periodic table	Non-metals
What are the name of the elements under the Group 2A?	Alkaline Earth Metals
Example of reactive metals	Sodium
T or F Non-metals have properties that are opposite of metals	True
These elements are harder, denser, stronger than alkali metals they also have higher melting point	Alkaline Earth Metals
Are chemically inert. They do not react with other elements on the periodic table	Noble Gases
They are mouthy brittle solids with properties of both metals and non-metals	Metalloids