Chemistry, 03.10.2020 01:01 mpzpowell7506
Which of the following statements is true?
Dalton believed atoms were made mostly of empty space.
The number of protons in an element is always equal to the number of neutrons.
Plasmas have a net negative charge.
Solids have a fixed mass, volume, and shape.
Answers: 2
Chemistry, 21.06.2019 18:00
In a sample of oxygen gas at room temperature, the average kinetic energy of all the balls stays constant. which postulate of kinetic molecular theory best explains how this is possible? a. attractive forces between gas particles are negligible because the particles of an ideal gas are moving so quickly. b. collisions between gas particles are elastic; there is no net gain or loss of kinetic energy. c. gases consist of a large number of small particles, with a lot of space between the particles. d. gas particles are in constant, random motion, and higher kinetic energy means faster movement.
Answers: 1
Chemistry, 22.06.2019 10:00
Which sentence about particles in matter is true? a. atoms are present in solids and liquids but not in gases. b. the particles of matter are in constant motion. c. the same kinds of atoms are found in different elements. d. when a solid changes to a liquid, the sizes of the particles change.
Answers: 1
Chemistry, 22.06.2019 22:30
3.09 lab: reaction of metals 1 which combinations of substances resulted in a chemical change? for each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. make a general statement about the reactivity of the metals in this experiment.
Answers: 1
Which of the following statements is true?
Dalton believed atoms were made mostly of empty space.
Mathematics, 21.08.2019 12:30
History, 21.08.2019 12:30
Biology, 21.08.2019 12:30
English, 21.08.2019 12:30
Mathematics, 21.08.2019 12:30
Computers and Technology, 21.08.2019 12:30
History, 21.08.2019 12:30
Mathematics, 21.08.2019 12:30
Geography, 21.08.2019 12:30
History, 21.08.2019 12:30