Plz ! i'll give brainliest to whoever answers this along with 15 points!
talc
(...
Plz ! i'll give brainliest to whoever answers this along with 15 points!
talc
(asphalt)
gypsum
(fingernail)
calcite
(copper coin)
fluorite
apatite
(knife blade)
feldspar
(steel file)
quartz
topaz
corundum
diamond
which of the substances listed above are pure elements?
Answers: 3
Chemistry, 21.06.2019 14:00
Which of the following statements is true? question 4 options: nuclear decay rates vary with the conditions of the reaction, but chemical reaction rates do not. chemical reaction rates vary with the conditions of the reaction, but nuclear decay rates do not. neither chemical reaction rates nor nuclear decay rates vary with the conditions of the reaction. both chemical reaction rates and nuclear decay rates vary with the conditions of the reaction.
Answers: 1
Chemistry, 22.06.2019 23:00
Which of your 24 wells had indications that a chemical reaction occurred? how were you able to tell that a chemical reaction occurred? which of your 24 wells had indications that a physical reaction occurred? how were you able to tell that a physical reaction occurred? report on both mixing and evaporation. make a general statement about whether your hypotheses were validated or rejected. must your hypotheses be correct for this to be a successful laboratory?
Answers: 3
Chemistry, 23.06.2019 01:00
Which is true concerning the products and reactants of photosynthesis and cellular respiration? a. the products of photosynthesis are sugars and the reactants of cellular respiration are starches. b. the products of photosynthesis are reactants in cellular respiration. c. oxygen is needed for photosynthesis and is given off in cellular respiration.
Answers: 2
Chemistry, 23.06.2019 02:00
The bone of a dinosaur and the imprint of a leaf are examples of which kind of fossils? a) index b) body c) amber d) trace
Answers: 1
Biology, 08.06.2020 06:57
Biology, 08.06.2020 06:57
English, 08.06.2020 06:57
Mathematics, 08.06.2020 06:57
Mathematics, 08.06.2020 06:57
Mathematics, 08.06.2020 06:57
Mathematics, 08.06.2020 06:57
Mathematics, 08.06.2020 06:57
History, 08.06.2020 06:57
History, 08.06.2020 06:57
History, 08.06.2020 06:57