Chemistry, 14.04.2020 22:15 haidenmoore92
Before we discuss how substances change, let’s talk about how we identify them. Substances have physical and chemical properties, or traits. You can use those traits to identify a substance. A substance’s physical properties include its shape, volume and freezing point. You can measure and observe these properties without changing the composition of a substance. For example, you can freeze liquid water to observe its freezing point without changing what the water is made of. The liquid water would become ice, but each molecule of water still contains two atoms of hydrogen and one of oxygen. A substance’s chemical properties include its pH level, flammability and reactivity with oxygen. You can’t measure these properties unless you also change the way the atoms or molecules are arranged.
In the passage above, what does the “composition” of a substance mean
Answers: 1
Chemistry, 22.06.2019 14:00
Calculate the energy required to ionize a hydrogen atom to an excited state where the electron is initially in the n = 5 energy level. report your answer in kilojoules
Answers: 1
Chemistry, 22.06.2019 19:30
Astring vibrates with a frequency of 10 hz. why can't a person hear the sound waves produced by the vibrating string, no matter how large the amplitude of the waves? out! this is homework and due tomorrow! you so much!
Answers: 2
Before we discuss how substances change, let’s talk about how we identify them. Substances have phys...
Social Studies, 02.10.2021 08:40
Mathematics, 02.10.2021 08:40
Biology, 02.10.2021 08:40
Mathematics, 02.10.2021 08:40
Mathematics, 02.10.2021 08:40
Chemistry, 02.10.2021 08:40
Chemistry, 02.10.2021 08:40
Physics, 02.10.2021 08:40
Mathematics, 02.10.2021 08:40
Mathematics, 02.10.2021 08:40