Question
the fallot ng ore.rrence,aot . cbmical ,haagel bCacson dLoxida is a colorless a 3. oNygea ha a ekting point of -218 and belliag poiat of -163 and 4 boiling point of -183° C. At ceep rature Ligatd .. o oxygen is es dry sce of satcer is a oubseance so1id is a sabstancet .Khich of tha tollouing types of aatter sugar ate euo ditteraas kinds of soleculaa. b· Tha compozicion of a "xture can vary The pzopecties at a mixturs never change. 6 khich of che tollouing is a hecerogenkous eixture a PuEe su8ar b. ait Eranbled eg8s d. vinegar 7. Nitrogen ia a a. pure subatance nixture tonic coapaund . salo 8. The chesical synbol far gold is 9· The correct spelling for the elenenc uith the chemical symbol P is a. phospborus phosphorous C Phospharus d. phospharous 0. Which one of the folloving statenents is not part of Dalton' s Aconic Theory? a. All natcer is nade up of atons. b. áll atons of a givea Eype of eleaenc are identical. c. In chenical change, the atoas reorganize iata different substances. d. tn a chenical change, acons are Indestruceibla Which of the folloving statements is true for a neutron? have a positive charge. . They are the lightest subatonic par e They ate the heaviest subatonic particle d. They are located outsi They have a positive charge. nucleus
Explanation / Answer
Note: Image is not completely readable. I have answered the questions which I can read completely.
5. The properties of a mixture never change is a false statement.
7. Nitrogen is a pure substance. If nitrogen in air is considered then it is a mixture.
8. The chemical symbol of gold is Au.
9. Phosphorus
10. C
11. Neutron has a positive charge.
15. d (12)
19. you can do the weighted avg to find the atomic mass (cannot see the number)
20. Atomic number (number of protons)
21. cations and anions
22. mercury
23. c
24. d ( isotopes must have the same number of protons)
25. d
