intro to chemestry Word Scramble
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Question | Answer |
the definition of matter | anything with mass and takes up space |
The two major categories of matter | Mixtures and substances |
the difference between homogeneous and heterogeneous mixtures | homo- Mixture is the same throughout hetero- different proportions |
the difference between mixtures and substances | substances can't be separated and mixtures can |
what we call the smallest possible particle of a compound | molecule |
what we call the smallest possible particle of an element | atom |
what solids do/do not retain | retain shape and size |
how molecules move in a solid | vibrate in place |
what liquids do/do not retain | size but not shape |
how molecules move in a liquid | fast and slip out of position |
what gases do/do not retain | neither size or shape |
most common state of matter in the universe? | plasma |
definition of melting point | solid to liquid |
definition of boiling point | liquid to gas |
definition of freezing point | liquid to solid |
evaporation | liquid to gas |
condensation | gas to liquid |
sublimation | solid to gas |
density (solid) | relationship between 2 measurements mass/volume |
hardness (solid) | measure of a solid's resistance to scratching |
elasticity (solid) | measure of a solid's ability to be stretched then return to it's size |
brittleness (solid) | the ability to shatter upon impact |
ductility (solid) | the ability of a material to be rolled into wires |
tensile strength (solid) | how much pulling or tension a material can withstand before breaking |
density (liquid) | relationship between mass and volume of an object |
buoyancy (liquid) | upward pressure on an object |
viscosity (liquid) | resistance to flow |
particles "less than an object" | subatomic |
charge and mass of a proton | posotive 1 amu |
charge and mass of an electron | negative 1/1836 amu |
charge and mass of a neutron | zero charge 1 amu |
what is the core of an atom that has almost all of the atom's mass? | neucleus |
which subatomic particles are found in the neucleus? | protons neutrons |
what is the empty space outside the neucleus where the electrons are found? | electronic cloud |
What happens to the energy of electrons the farther away they are from the neucleus? | It will increase |
What number do we use to distinguish atoms? | Atomic number |
What force makes the neucleus want to split apart because the posotive protons want to repel? | electromagnetic force |
What holds the neucleus together | Strong nuclear force. |
what does periodic mean? | repeating according to the same pattern |
who developed the first periodic table? | Bimitri Mendeleev |
how did bimitri mendeleev organive the first table? | Increasing atomic mass |
Who fixed the periodic table? | Henery Mosely |
How did henery mosely organize the table? | Atomic number |
What are the two names of the 18 vertical columns on the periodic table? | Group,family |
How elements in the same family compare to each other | similar |
how does the size of an atom change as you move down a column? | increases |
How does the reactivity change as you move down a column? | increases |
What are the 7 horizantal rows? | periods |
how elements in the same row compare to each other | completley different |
how the size of an atom changes as you move across a row? | decreases |
what 2 subatomic particles always increase by 1 as you move across a row? | protons and electrons |
what are the 2 rows that are below the periodic table? | the rare earth metals |
what elements have luster? | metals |
which elements are dull? | nonmetals |
which elements can be shiney or dull | metalloids |
Which types of elements are ductile and malleable? | metals and metalloids |
which elements are good conductors? | metals |
what type of elements have the highest densities? | metals |
how many valence electrons do metals have? | 1,2,3,4 |
wheather metals tend to gain or lose electrons when bonding? | lose |
what does corrosion mean? | rust |
how many valance electrons do nonmetals have | 5,6,7,8 |
wheather nonmetals tend to gain or lose electrons when bonding? | gain |
family 1 name? | alkali |
family 2? | alkali earth |
family 3-12 | transition |
family 18? | noble gases |
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