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Mixtures Notes #1-3
Science Grade 6
Physical Changes | a change that DOES NOT produce a new substance, but changes some properties |
Chemical Change | a change that DOES produce a new substance |
What kind of change is: aluminum foil cut in half | Physical change |
What kind of change is: lighting a match | Chemical change |
What kind of change is: rust on a nail | Chemical change |
What kind of change is: melting butter on toast | Physical change |
What kind of change can be recovered? | Physical Change |
What kind of change are the particles broken apart and rearranged into new particles? | Chemical change |
What are physical properties? | characteristics that can be observed or measures without changing the makeup |
Examples of physical properties | color, smell, size, texture |
What are chemical properties? | characteristics that can only be observed by changing the makeup |
Examples of chemical properties | atoms and molecules: water is made of hydrogen and oxygen |
Phase change is _______ | physical |
Burning is a ___________ change | chemical |
Bubbling or fizzing is a ____________ change | Chemical because a new gas is forming |
A color change indicates | atoms are separating (chemical) |
Chemical changes cannot | go back to original form |
mixture | 2 or more substances combines physically |
In a mixture, substances | keep their chemical properties |
homogenous mixture | all substances one color |
heterogenous mixture | substances have more than one color |
solution | a mixture where one substance dissolves into another substance |
dissolve | to mix evenly |
sugar is able to dissolve so it is | soluble |
Solutions are | clear |
solute | the substance that gets dissolved (sugar) |
solvent | what does the dissolving (water) |
universal solvent | water |
suspension | cloudy mixture where particles settle on standing |
insoluable | unable to dissolve |
colloid | mixture that is mixed but not dissolved |
permanent emulsions (milk, paint) | colloids |
Which separate upon sitting | suspensions |
Which are homogenious | solutions and colloids |