Science

SCIENTIFIC ATTITUDES AND VALUES

1. Curiosity - Scientist never stop asking questions

2. Cautious - Scientist analyze cause and effect relationship.

3. Perseverance - Scientist work hard.

4. Honesty - Scientist record what actually happened.

5. Patience - Scientist do not give up easily

6. Humility - Scientist do not claim achievements for themselves.

7. Respect for authority - Scientist recognize and acknowledge other scientist.

8. Open-Mindedness - Scientist do not jump into conclusion right away, they weigh facts.

9. Resourcefulness - Scientist are good at selecting alternative materials.

Matter - anything that has mass and take up space.

Element - made up of one kind of ato

Compound - composed of two or more indefinite proportions.

solvent - dissolving medium

solute - dissolved substance

mixture - formed when two or more substances combine.

pure substance - has a definite composition.

Matter can be classified as :

Pure substance

mixture

Pure substance has:

element

conpound

CLASSIFICATION OF MIXTURE:

Solution - homogeneous or uniform mixture of two or more substances.

Suspension - heterogeneous mixture of two or more substances.

Colloid - has a property that has an

intermediate between a solution and suspension.

EXAMPLES OF MIXTURES:

Solution: salt and water, rubbing alcohol, vinegar, sugar and water, coffee, and chocolate drink

Suspension: oil and water, chalk dust and water, muddy water, dust in air, orange juice with pulp, water with ice, sand with water, flour with water

Colloid - jelly, milk, blood, gelatin, mayo, cheese, paint