classifying non-uniform (heterogeneous) uniform homogeneous_w2.pptx

Science 6
classifying non-uniform (heterogeneous) uniform homogeneous

1. Classify non-uniform ( heterogeneous ) mixtures into uniform ( homogeneous) mixtures

2. GROUP ACTIVITY

3. Homogeneous Mixture The prefixes “homo”- indicate sameness A homogeneous mixture has the same uniform appearance and composition throughout. Many homogeneous mixtures are commonly referred to as solutions

4. Particle size distinguishes homogeneous solutions from heterogeneous mixtures. Solutions have particles which are the size of atoms or molecules-too small to be seen. A colloid is a a homogeneous noncrystalline substance consisting of large molecules or ultramicroscopic particles of one substance dispersed through a second substance. Colloids include gels, sols, and emulsions; the particles do not settle, and cannot be separated out by ordinary filtering or centrifuging like those in a suspension

5. Heterogeneous Mixtures The prefixes: “hetero”- indicate difference. A heterogeneous mixture consists of visibly different substances. In contrast a suspension is a heterogeneous mixture of larger particles. These particles are visible and will settle out on standing. Examples of suspensions are: fine sand or silt in water or tomato juice .

6. A heterogeneous mixture is simply any mixture that is not uniform in composition - it's a non-uniform mixture of smaller constituent parts. Using various means, the parts in the mixture can be separated physically from one another.

7. What mixtures can be found in the following places? School canteen 2. Coffee shop 3. Restaurant

8. Which mixtures are uniform (homogeneous)? Non-uniform (heterogeneous)?

9. Are all mixtures beneficial? If not, cite examples of harmful mixtures.

10. What do you think are the harmful effects of these mixtures to the body? What should we do with these harmful mixtures?

11. Classify the following mixtures. Write HMM if the mixture is uniform mixture (homogeneous) and HTM if it is non-uniform mixture (heterogeneous) on the space provided before the number. ___1. water ___2. pizza ___3. corn oil ___4. Maggie noodle soup ___5. cup of milk ___6. soil ___7. alcohol ___8. fruit salad ___9. oil and water ___10 . cologne

12. Put a check mark (/) before a statement that tells about heterogeneous mixture and cross mark (X) if not. ____1. Components in a mixture retain its characteristics. ____2. Particles of the substances in a mixture cannot be identified. ____3. It is a visible mixture of many ingredients. ____4. Mixture can be separated. ____5. Halo-halo is an example of a nonuniform mixture.

13. Give 5 example of heterogeneous mixture and be able to describe its components.