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Question and Answer
Question | Answer |
---|---|
Elements in the far left form what kind of ions? | Elements in the far left from positive ion easily. |
Group 1 atoms generally lose ___ electron(s) to from ions with ___ positive charge. | Group 1 atoms generally lose 1 electron to from ions with 1 positive charge. |
Group 2 atoms generally lose __ electron(s) to from ions with a positive charge of __. | Group 2 atoms generally lose 2 electrons to from ions with a positive charge of 2. |
What type of ions does Group 18 form? | Group 18 does from any ions at all. |
What do we refer elements in Group 18 as? | We refer to Group 18 elements as the "Noble Gases". |
What type of ions does Group 17 form? | Group 17 elements often gain one electron to from a negative ion. |
Then, if this pattern continues, what type of ions do elements in Group 16 like to form? | Atoms of Group 16 elements typically gain 2 electrons to from a -2 ion. |
The atoms of Group __ and Group __ elements are the most reactive. | The atoms of Group 1 and Group 17 elements are the most reactive. |
The atoms of what group are the least reactive? | The atoms of Group 18 are the least reactive. |
Most elements are what? | Most elements are metals. |
Name 2 characteristic of metals. | Two characteristics of metals are that they are good conductors of heat and electricity and they are malleable, meaning they can be shaped into different forms. |
Name the other two characteristics of metals. | Two characteristics of metals are that they have a shiny appearance and that they are usually solid at room temperature. |
What information about an atom's properties can you read from the periodic table? | A couple of ways you can get info on an atom properties it that the atoms, or the atomic size gets larger top to bottom and decreases left to right. Also, density increases left to right. |
Would you expect strontium to be more like potassium or like bromine? | I think it would be more like potassium because strontium is in Group 2 and potassium is in Group 1 and bromine is Group 17. Being this close, they might share similar properties. |
Barium is in group 2. Recall that atoms in Group 1 lose 1 electron to form ions with a +1 charge. What type of ion would barium form? | If this trend went on, Barium would form a +2 ion which means it loses 2 electrons when it forms an ion. |
Explain how scientists can state with certainty hat no one will discover an element between Sulfur and Chlorine. | The atomic number of Sulfur is 16 and Chlorine is 17. It is impossible to find an element that has an atomic number of 16.5 because there is no such thing as a half atom. |
Metals are ______ meaning they can be shaped easily by pounding, bending, or being pulled into long wires. | Metals are malleable meaning they can be shaped easily by pounding, bending, or being pulled into long wires. |
Alloys can be _____, less likely to _______ and easier to _____ than pure metals. | Alloys can be stronger, less likely to corrode and easier to shape than pure metals. |
Groups 3-12 are called what? Why? | Groups 3-12 are called transition metals because they are generally less reactive. |
What kind of properties do nonmetals have? | Nonmetals have properties opposite of metals. |
Name the first two characteristics of nonmetals. | Two characteristics of nonmetals are that they have a dull appearance and they are poor conductors of heat and electricity. |
Name the last two characteristics of nonmetals. | Two characteristics of nonmetals are that they are not malleable and most are gases at room temperature. |
Where are nonmetals found? | Nonmetals are found on the right of the table. |
Where are metalloids found? | Metalloids are found on either side of the zigzag line separating metals from nonmetals. |
What are the three main classes of the Periodic table? | The three main classes of the Periodic table are metals, nonmetals, and metalloids. |
What are the main characteristics of metals? | The main characteristics of metals are that they are malleable, they are shiny, most are a solid at room temperature, and they are good conductors of heat & electricity. |
Use the periodic table to determine whether a carbon atom or a Fluorine atom would be more reactive. | Carbon is in Group 14 and Fluorine is in Group 17. With this information I can conclude that since Groups 1 & 17 are the most reactive, Fluorine would be more reactive since it is in Group 17. |
Why do you think noble gases were among the last of the naturally occurring elements to be discovered? | Noble gases are not very common in the Earth's atmosphere, and a lot of other elements are. Ex. Argon gas makes up 1% of the atmosphere while nitrogen makes up 78%. Scientists use the atmosphere to find the elements. |