Ajuda com o dever de casa de química

20. __ is a measures of the intensity of heat of a body's. 21. __ is the solute in small amount and the solvent is large amount proportion. 22. __ is the solvent in small amount &solve is in farge amoun proportion. 23. __ a change of one type of matter into another type. 24. __ =1 cc 25. __ is the only type of measuremen t that is free from uncertainty

1. Write True it the statement is correct otherwise write False if it is wrong. __ 1.Colloids purticle are the particle between solutions d suspension particles. __ 2. One cubic meter is cqual to one thousand liters. __ 3.The solution less solute greater solvent is concentration. __ 4. Captive zeroes are always significant. __ 5. Suspension mixture is homogeneous mixture. __ 6.Counting is the only up of measurement that free from uncertainty. Choose the best answer from the alternatives __ 7., One gram is equal to:A. 1times 10^3kg B. 10^-3kg C. 10^-2kg D 10^-1kg __ __ 8. A basketball player jumps 10t) cm. How many they jump in inch? A.38.37 B.39.37 C .40 9.- is the quantity of matter in an object. A. Mass B. Weight C. Temperature D.Observation __ __ 10.what is mass of copper if it has density 8g/cm^3 and volume 0.63cm^3 A. 5.04g B.4.07 C.6 D.S g __ 11. __ is heterogeneous mixture. A. colloid B . Suspension C. Solution D. All __ amount of solute dissolved in a solvent at specific temperature &pressure. A. temperature B . Solubility C .compound D. Solute __ 313, __ a substances that cannot be broken down into simpler substances by chemical changes. A . Compound B . Element C. property D. All __ 14, The substance in which solute dissolves to produce homogeneous mixture A. Solvent B . Solution C. Solute D.. All __ 15, In a solution all components are as single phase. A. True B. False __ 16. The characteristics that distinguish one substance from another are called __ A. property B . Element C. Compound D. None __ 17.One is does not scatter the beam of light. A. Suspension B. Solution C. Colloid D. None __ 18 __ is homogenous mixture of two or more substances. A. Solvent B . Solution C . Suspension D, Solute II. BLANK SPACE 19. List the factors affecting of solubility (4pts). A. __ B. __ C. __

__ 8. A basketball player jumps 100 cm. How many they jump in inch? A.38.37 B.3037 C.40 __ 7., One gram is equal to:A. 1times 10^3kg B. 10^-3kg C. 10^-2kg D 10^-1kg __ 9.- is the quantity of matter in an object. A. Mass B. Weight C. Temperature D.Observation __ __ 10.what is mass of copper if it has density 8g/cm^3 and volume 0.63cm^3 A.5.04g B.4.07g C.6 g D.S g __ 11. __ is heterogeneous mixture. A. colloid B . Suspension C. Solution D. All __ 12, The amount of solute dissolved in a solvent at specific temperature pressure. A. temperature B . Solubility C .compound D.Solute __ :13. __ a substances that cannot be broken down into simpler substances by chemical changes. A . Compound B . Element C. property D. All __ 14, The substance in which solute dissolves to produce homogeneous mixture A. Solvent B . Solution C. Solute D . All __ 15, In a solution all components a

8) Indique os grupos e o número de elétrons existentes na camada de valência dos elementos carbono (Z=6) bromo (Z=35) rádio (Z=88) césio (Z=55) e fósforo (Z=15)

Quando se trata de desinfetar a agua bruta aquela retirada diretamente da fonte natural e normalmente imprópria para consumo humano, algumas consideraçbes deven ser analisadas entre elas a extensio da desinfecção, os meios disponiveis para a realiza-la e, nào menos importante, as leis que a regulam. Os métodos de desinfecção da Agua podem ser flsicos ou quimicos, podendo ate existir uma combinação entre cles. Com base no contexto assinale a altemativa que apresenta apenas métodos de desinfecção da água: Oronização, radioatividade e decantagle Decantação, ozonização e cloração Tratamento biologice, cloração edecantaglo