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Periodic Table
Test on Atoms, their Structure, Becoming Chemically Stable, Periodic table...
| Question | Answer |
|---|---|
| Atoms | -The building blocks of matter-Made up of protons, neutrons, and electrons |
| Compound | -A substance made of different elements |
| Element | -A substance that can't be broken down into another substance by phisical means.-A pure substance-all the atoms have the same atomic number |
| Atomic Number | -Number of protons in an atom |
| Mass number | -Weight of protons and neutrons combined |
| Valence electrons | -Number of electrons in the outermost shell. |
| Ductility | -Capable of being pulled out into a long wire |
| Conductivity | -Ability of an object to transfer heat or electricity into another object |
| Malleability | -Capable of being shaped by a hammer |
| Luster | -Reflectant of light |
| Brittle | -Hardness |
| What is the difference btween an atom, an element, and a compound? Give examples of each. | -Baisically, an atom describes an element, for example Boron-A compound is made up of more then one element (H2O for example)- |
| - | |
| What are the different numbers in the element's box on the periodic table? What are the numbers called and what do they tell you about the subatomic particles in an atom of that element? | -On top, it says the ATOMIC NUMBER-equals the number of protons (which equals the amount of electrons in a 0 charged atom)-On the bottom, it show the ATOMIC MASS-equals the protons + the neutrons-neutrons = atomic mass - atomic number |
| o | |
| How do you know where to place an electron when you draw an atom? What are the rules of maximum number of electrons in a shell? | -In the first shell the max electrons:2-In the 2nd, the max is 8-In the 3rd, the max is 32 BUT once there's 8 electrons in it it goes on to the next shell -The max for all the other shells is 32. |
| Why do atoms lose or gain electrons? What is the octet rule? | -They all want to become stable-Octet rule:Once a atom has 8 valence electrons, it's stable-Atoms lose or gain electrons to only have 8 electrons and become stable. |
| What is an exeption to the rule? Why is that exception still chemically stable? | -The exception is HELIUM-It only has 2 valence electrons-It's STILL stable because it has only one shell who's max is 2 and it has 2 so it's stable |
| How many periods are there on the periodic table? What does a period tell you about the electrons in an atom? | -There are seven periods -The number of periods is the number of shells in the atom. |
| What are groups? What are the names of all the different groups? | -Groups refer to the columns on the periodic table. -There are alkali metals, alkaline earth metals, transition metals, the boron family, the carbon Family, the nitrogen family, the oxygen family, the halogen family, noble gases, and the rare earths. |
| What are some of the important uses of elements in the different families? | The Alkali M:soap,fertilizer,medicine Alkaline Earth M:teeth,bones Transition M:jewelery,wire,sunscreen Carbon F:coal,fuel,graphite Boron F:glass,soap Nitrogen F:matches Oxygen F:air,ozone,eggs Halogen F:photographic film Noble Gases:neon signs R |
| What does the group number tell you about valence electrons? | -It tells you how many of them there are. |
| Discuss specific trends that exists in the following groups of elements: -Transition Metals (Cu, Ag, Au) -Alkali Metals -Halogens | -Transition Metals: all non reactive, and will tarnish over time. They're mailable -Alkali Metals: Going down the list, it gets easier to cut them, and their melting point decreases. They all like to react with CI. They burn colorfully when in salt form. |
| Discuss specific trends that exists in the following groups of elements: -Halogens | They're all non metals and they all change states. They're all poise nous alone, but not when combines with other compounds. All of them are colors, and they get more reactive as you go down the list. They're all used for a lot of everyday things. |
| What are the differences between the characteristics of metals and non metals? | -Metals have LUSTER, they're conductors of heat and electricity, they're mailable and/or ductile. When they become ions, they're usually + charged. |
| Which are the most reactive metals? The least? Which are the most reactive non metals? | -The most reactive metals are the alkali metals |
| What is the relationship between the Lewis Structures and the family to which an element belongs? | -All the elements in a familly will have have the same Lewis Structure, because they all have the same number of valence electrons. |
Created by:
cinnamonpeaches
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