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Transcript
Name__________________________________
Block______
Physical and Chemical Changes in Matter
Put a “P” next to descriptions or indications of physical change or property.
Put a “C” next to descriptions or indications of a chemical change or property.
1._____ the physical properties of a substance may change, but the kind of substance does
not change
2._____ a change during which one of the substances in a material changes into a different
substance
3._____ can sometimes be a reversible change
4._____ a change that is not easily reversible
5._____ a melting ice cube
6._____ a broken piece of chalk
7._____ a burning cigarette
8._____ mixing sugar in water
9._____ baking bread
10._____ flammability (ability of a substance to burn)
11._____ changing the “tarnish” on a penny to another substance to remove it from the
penny
12._____ wearing down the tread on your tennis shoes
13._____ writing on a sheet of paper
For question 14 & 15, write one chemical and one physical change that are not listed above.
14.__P__
________________________________________________________
15.__C__
________________________________________________________
Classification of Matter
True or False
1. Water is matter because it has mass and takes up space.
2. Ideas are matter because they have mass.
3. Making ice cubes is a chemical change.
4. Boiling point and freezing point are physical properties.
5. Sodium chloride is an element.
6. The composition of a mixture never varies.
7. A solution is a homogeneous mixture.
8. Elements in compounds can be separated by physical means.
9. Mixtures can only be separated by chemical means.
10. Chemical changes produce new substances with new chemical properties.
11. A substance in the solid phase can be changed into the liquid phase.
12. Elements are composed of a single type of atom.
13. Solutions, elements and compounds are all uniform examples of matter.
Multiple Choice
1. Air is a(n) (element, compound, mixture).
2. Salt water is a(n) (mixture, compound, element).
3. (Breaking, Melting, Burning) is an example of a chemical change.
4. (Lemonade, Iced tea, Water) is not a mixture.
5. (Density, Burning, Color) is not a physical property.
6. Iron exists as a (solid, liquid, gas) at room temperature.
7. At room temperature, helium is usually a (liquid, gas, solid).
8. A substance may change its phase if the (size, temperature, shape) is changed.
9. (Rusting, Freezing point, Boiling point) is a chemical property.
10. Carbon is an example of a(n) (compound, element, mixture).
Completion
1. Matter that varies in composition is called a(n) _______________.
2. Heating a frying pan is an example of a(n) _______________ change.
3. Substances can be forced to change their phases through changes in pressure and
________________.
4. Flammability and reactivity are _________________ properties.
5. Compounds are decomposed by _______________ changes.
6. Something that evaporates easily usually has a(n) _____________ boiling point.
7. Shape is a _______________ property.
8. Density is a ________________ property.
9. Heat and light are often released in a(n) ______________ change.