Science vocabulary :

atoms that are chemically bonded. cannot be separated physically. pure substance because they act as a single unit.

1. heterogeneous

2. homogeneous

3. solute

4. solvent

5. solution

6. mixture

7. colloid

8. dissociation

9. pure substance

10. suspension

11. element

12. compound

1. Heterogeneous: Mixtures in which composition is not uniform throughout. For example, soil.

2. Homogeneous: Mixtures that have uniform composition throughout. For example, air.

3. Solute: the component of a solution which is present in smaller quantity. For example, Sugar in water

4. Solvent: the component of a solution which is pr3esent in larger quantity. For example, water

5. Solution: A solution is a homogeneous mixture of two or more substances. For example brass.

6. Mixture: When two or more compounds or elements mix up physically they from a mixture.

7. Colloid: Solutions in which particles are large and possess the characteristics of the Tyndall effect. For example milk.

8. Dissociation: the splitting of a molecule into smaller molecules is called dissociation.

9. Pure substance: A pure substance is a type of matter having definite properties.

10. Suspension: Suspensions are heterogeneous mixtures of undissolved particles. For example milk of magnesia.

11. Element: element is a substance made up of the same number of atoms.For example hydrogen

12. Compound: Compound is a substance made up of two or more elements. For example water.

1. 1 mole of anything contains 6.022x10^23 pieces  

d  

2. a  

3. c, number  

5. 1.24x10^24atoms / 6.022x10^23atoms/mole = 2moles h2 atoms  

6. fe2br3 mass = 2moles x mass fe + 3 moles x mass br  

molar mass = grams / number of moles = g/mole  

to find moles = g / molar mass  

to find mass = g = molar mass / moles

2b2t

explanation:

2b2t