chem Object 1- 1c, 1d
define a chemical change. Give an example.
Substance converted to one or more substances with all new properties. ex.) Rusting, bleaching, color change
define a physical change. Give an example.
Appearance changes, composition stays the same, no new substances are created. Ex.) Melting, size change, shape change
define a chemical property. Give an example.
Determining the ability, if a substance can be converted into another substance. Ex.) flammability, rust, tarnish
define a physical property. give an example.
can be observed or measured without altering the chemical makeup. Ex.) mass, melting point, density, color
when it's hot outside and water collects on the outside of a cold glass, is this an example of a physical or chemical change? Why?
physical change- it's changing the physical aspect of the substance, not the chemical part of the substance. it's not turning into a new substance.
explain what is happening on the particulate level during a chemical change. And during a physical change.
During chemical change, the original substance is converted to one or more new substances with all new properties. Physical change changes the appearance or state of the substance without changing the composition.
why is color a physical property, but a color change is a chemical change?
Color is an observable characteristic without changing the matter itself, which is why it is a physical property. Color change involves a c Yeah hemical interaction leading to change in the substance which makes it a chemical change.
define a chemical formula
Tells the number of atoms in each element in a compound
List of seven elements that are found paired in nature
H2, N2, O2, F2, Cl2, Br2, l2
what is the difference between CO and Co?
They are two different elements, One is carbon monoxide, and the other is cobalt