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Chemistry, 20.01.2020 11:31 katherineweightman
Which of the following is an indication that a substance has undergone a chemical change? no new product has been formed. the color of the substance has not changed. the original constitute has not changed. the molecular structure has changed. nextreset
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Chemistry, 23.06.2019 01:00
Imagine if during the cathode ray experiment, the size of the particles of the ray was the same as the size of the atom forming the cathode. which other model or scientific observation would have also been supported? 1. this would support dalton's postulates that proposed the atoms are indivisible because no small particles are involved. 2. this would support bohr's prediction about electrons moving in orbits having specific energy. 3. this would support bohr's prediction about electrons being randomly scattered around the nucleus in the atom. 4. this would support dalton's postulates that proposed that atoms combine in fixed whole number ratios to form compounds.
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Chemistry, 23.06.2019 04:00
Achemical reaction is done in the setup shown , resulting in a change of mass. what will happen if the same reaction is done in a sealed container that is placed on the electronic balance?
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Which of the following is an indication that a substance has undergone a chemical change? no new pr...
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