Chemistry, 28.01.2020 02:31 andybiersack154
6. identify in the scenarios given as s-solid, l-liquid, g-gas, p-physical change, c-chemical change, hm-homogenous mixture and ht-heterogenous mixture: (a) good milk (b) spoilt milk (c) 10 days old urine (d) conducting electricity (e) a slice of atom from copper wire (f) ice-water (g) heating an fe metal red-hot in a vacuum (h) density (i) color, (j) hardness, (k) melting and (l) boiling points (m) electrical conductivity (n) condensation (o) freezing (p) sublimation (q) deposition (r) flammability, toxicity, acidity, reactivity, and heat of combustion
(a) good milk:
(b) spoilt milk:
(c) 10 days old urine:
(d) conducting electricity:
(e) a slice of atom from copper wire:
(f) ice-water:
(g) heating an fe metal red-hot in a vacuum:
(h) density: p
(i) color: p
(j) hardness: p
(k) melting and: p
(l) boiling points: p
(m) electrical conductivity: p
(n) condensation:
(o) freezing:
(p) sublimation:
(q) deposition:
(r) flammability, toxicity, acidity, reactivity, and heat of combustion: c
Answers: 1
Chemistry, 21.06.2019 21:00
Match the following items. 1. high-intensity bundle of energy being emitted from some decaying nuclei gamma ray 2. particle radiating from the nucleus of some atoms beta particle 3. negative particle identical to an electron but radiating from a decaying nucleus alpha particle
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Chemistry, 22.06.2019 07:40
22. a flask containing 450 ml of 0.50 m h2so4 was accidentally knocked to the floor. how many grams of nahco, do you need to put on the spill to neutralize the acid according to the following equation: h2so4(aq)+2 nahcos(aq) na,so(aq) +2 h20()+2 co2(g) d) 38 g a) 2.3 g b) 9.5 g c) 19 g
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6. identify in the scenarios given as s-solid, l-liquid, g-gas, p-physical change, c-chemical change...
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