Identifying substance_a_1
- 1. Identifying Substances! By: Kasey Nelson & Amanda Bobbitt
- 2. Density! Density is a physical property of matter.
- 3. Density Is the mass per unit volume of a material!
- 4. The formula for calculating density is Density=mass
- 5. volume
- 6. Melting Point and Boiling Point! Phase, or state, is a physical property of matter. On earth, most matter exists in three phases: Solid, liquid, and gas!
- 7. Matter can change phase if it absorbs or releases energy! Most often, the energy absorbed or released is thermal energy, or heat!:p d:
- 8. :)(:Specific Heat!:)(: The specific heat of a substance is the amount of heat needed to raise one gram of a substance by one degree Celsius.
- 9. The unit of specific heat is joules per gram per degree Celsius.
- 10. Specific heat values can be used to compare how different substances absorb heat.
- 11. :)(:Solubility:)(: Solubility is another physical property that can be used to identify a substance.
- 12. Solubility is a measure of how much of a substance dissolves in a given amount of another substance.
- 13. Sugar is soluble(or able to dissolve) in water.
- 14. When sugar dissolves in water, the two materials form a solution. A solution is a mixture in which the particles are too small to be distinguished from each other.
- 15. Other properties used to identify substances:)pd(: Not all properties of substances are physical properties.
- 16. Matter also has chemical properties.
- 17. A chemical property is a characteristic that describes how the matter will change under certain conditions. One chemical property of matter is reactivity.
- 18. Reactivity describes how likely an element is to form bonds with other elements.
- 19. Thank you!