1. Formular o nombrar según sea su caso: 1. Dicloruro de calcio 2. Na2S 3. Bromuro de hidrógeno o ácido bromhídrico 4. OCl2 5. Sulfuro de dipotasio 6. Ni2O3 7. Trihidruro de hierro 8. CO2 9. Acido clorhídrico o cloruro de hidrógeno 10. MgH2 11. Acido sulfhídrico o sulfuro de dihidrógeno 12. NH3 13. Dinitruro de trimagnesio 14. NO2 15. Óxido de magnesio 16. O3Br2 17. Triseleniuro de diníquel 18. AgCl 19. Difluoruro de oxígeno 20. PH3 21. Telururo de mercurio 22. BeH2 23. Dihidruro de estroncio 24. Co2O3 25. Óxido de cromo 26. HCl 27. Sulfuro de diplata 28. PtO2 29. Trifluoruro de níquel 30. SiO2

To run the physics cart, the fan speed of the cart is manipulated. this is the (blank) variable. the cart accelerates due to the speed of the fan. acceleration is therefore the (blank) variable. a “constant” is a parameter that stays the same regardless of the variables. one parameter of the cart that is held constant is the (blank) .

Mass (kg) force (n) 5 25 10 50 15 75 20 100 a student was trying to find the relationship between mass and force. he placed four different masses on a table and pulled them using a spring scale. the table shows the different masses used in the experiment and the force required to pull each mass. the student concluded that more force was required to pull heavier objects. what comment would you make regarding his conclusion? a) no clear relation can be observed between mass and force from the data. b) there is a direct proportion between the mass and force listed in the table. c) gravity should have been taken into account while performing the experiment. d) there is an inverse proportion between the mass and force listed in the table.

The earth is constantly spinning on its axis, like you might spin a basketball on your finger. it is this spinning of the earth that causes