click below
click below
Normal Size Small Size show me how
Matter L2 Overall
Matter L2 Overall Assessment Questions
Term | Definition |
---|---|
Chemical bond | the connection between atoms in more complex particles |
Molecule | a group of two or more atoms that are held together by chemical bonds; a molecule has a unique composition and structure |
Model | a representation of an object which makes important aspects easier to see |
Atomic composition | the types of elements that make up a substance, as well as the specific ratios of atoms of each kind of element that make it up |
Chemical structure | the specific way in which the bonds and atoms are arranged within the molecules of a substance |
Crystal | a solid structure whose atoms or molecules are arranged in a repeating, three-dimensional pattern |
Polymer | a type of extended structure that is made of many smaller, repeating subunits in a chain; the repeating subunit is a unique molecule |
Extended structure | a structure whose subunits occur in a constant ratio and are arranged in a repeating pattern |
If I have a crystal made of cube shaped molecules, what shape will the WHOLE crystal be? | A cube |
Molecules with identical chemical composition but different structures will have different | properties |
Different arrangements mean that the molecules have different | different properties |
True or False: H₂O is the CHEMICAL FORMULA for water? | True |
A molecule's STRUCTURE is... | The way the atoms and bonds are arranged (put together). |
A molecule's COMPOSITION is... | The number and types of atoms in the molecule. |
When you have a molecule, and you repeat it over and over again, what do you have? | An extended structure |
Why do crystals form unique shapes? | the arrangement of the atoms |
What do we use to help us visualize and understand atoms? | models |
A chemical formula is... | the type and number of atoms is a molecule |
Plastic is made of chains of smaller molecules, that means that it is a .... | polymer |