Properties of matter 2ESO

Watch this video about matter and answer in (formulario the contacto" to  these questions:

• Where can do we find matter?
• What do we understand about matter?
• What do we understand as propoerties?
• What properties do all matter have?
• Tell examples of properties we can use to different from one substance to another

Structure of Matter and the KMT hypothesis

Watch these videos and answer the questions

1.  What is the main idea of the KMT?
2. What are the two main parte of KMT
3.  How do partícles move in a)solid b)líquids c)gasses

Last Review 3 ESO

1 How would you separate? A) A mixture of oil and water, b) a mixture of sand, water and iron c)a dissolution of water and alcohol.

2 List the basic and the derived magnitudes, indicating symbols and units

3 Convert these magnitudes to the IS units

813 mm                                                               12,5 mg

3,2 min                                                                234ºC(add 273,15K)

5,98 km²                                                             165 km/h

0.125 hm³                                                           77,7 h

23,14 ton                                                            25 L(dm³)

 4 Express into scientific notation with the number of digits between parenthesis:

0.00025698781 m (4)                                         235874 kg (3)

21.8754 l (2)                                                       0.012543 g/l (5)

5 When we measure the energy of an object against its speed, we get:

Speed m(s)	Energy (J)
2	8
4	32
5	50
6	72

Graph these results, determine the relationship and the equation for energy as a funcion of speed