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ChemistryTest
5th Grade
Question | Answer |
---|---|
Chemistry | The study of substances; what they are made of, how they act, and how they change |
Matter | Anything that takes up space and has mass |
Atom | Tiniest particle of matter that can't be divided without losing its special characteristics |
Molecule | When two or more atoms bond together |
Viscosity | Liquid's resistance to flow |
Compound | Molecule made of two or more elements |
4 states of mater | Solid, liquid, gas, and plasma |
Two specific properties of solids | atoms pack tightly together; strong bonds; has definite shape; etc. |
Two specific properties of liquids | |
Two specific properties of gases | |
Give two examples of solids | |
Give two examples of liquids | |
Give two examples of gases | |
Plasma | Is a charge up gas, only found naturally out in space |
Identify liquid with highest viscosity - think of the marble experiment | |
Identify liquid with lowest viscosity- think of the madrble experiment | Water |
Melting | Solid to liquid |
Freezing | Liquid to solid |
Evaporation | Liquid to gas |
Condensation | Gas to a liquid |
Sublimation | 1. Gas to a solid 2. Solid to a gas |
Parts of an Atom | 1. Nucleus 2. Protons 3. Neutrons 4. Electrons |
Proton | Has a positive charge |
Neutron | Has a neutral charge |
Electron | Negative charge |
Bonds | Connections between atoms and molecules |
Two elements that make water | One hydrogen, two oxygen |
Two elements that make salt | One sodium, one chloride |
The Periodic Table can be use to find the.... | Element name, symbol, atomic number, atomic mass, etc. |
Atomic Number | Number of protons in the element |
Periods | Rows in the periodic table |
Groups or Families | Columns in periodic table |
Only two liquids on Periodic Table | Mercury and Bormine |
Metals | Most of the elements on the periodic table |
Molecules | Are always moving in matter |
Non-Metals | Mostly gases |
Metalloids | Between a metal and a non-metal such as silicon |
Heating or cooling the molecules... | Changes their speed |
Heat a molecule to make it go | Faster |
Cool a molecule to make it go | Slower |
Cooled molecules move | Closer together |
Heated molecules move | Farther apart |
Chemical changes | When substances react with one another, and new substances are formed |
Physical changes | When the form or appearance of matter changes, but the matter does not change into a different kind of matter |
Breaking a pencil is an example of a | Physical change |
Burning a piece of wood or charcoal is an example of a | Chemical change |
Describe the "Clicking Cap Experiment" ... | |
Describe the "Physical/Chemical Change Lab".... | |
Describe the "Marble Race Lab" ... | |
Describe the "Food Coloring Demo Lab when put into cold/hot water" .... |