Chemistry, 12.12.2021 01:40 haileyw123
There are four sketches below. The first sketch shows a sample of Substance X. The three sketches underneath it show three different changes to the sample.
You must decide whether each of these changes is possible. If a change is possible, you must also decide whether it is a physical change or a chemical change.
Each sketch is drawn as if the sample were under a microscope so powerful that individual atoms could be seen. Also, you should assume that you can see the
entire sample, and that the sample is in a sealed box, so that no Matter can enter or leave.
Answers: 2
Chemistry, 22.06.2019 03:00
Zoe is investigating the composition of substance a, an unknown substance. using chemical processes, she analyzes substance a and determines it is composed of sodium, oxygen, and hydrogen atoms in a ratio of 1 : 1 : 1. what is substance a? a. a compound b. an element c. a heterogeneous mixture d. a homogeneous mixture
Answers: 1
Chemistry, 22.06.2019 12:00
What term is applied to a scientist who studies ancient life, including animal and plant fossils a. anthropologist b. dendroclimatologist c. geophysicist d. paleontologist
Answers: 2
Chemistry, 23.06.2019 01:30
Witch two conditions can limit the usefulness of the kinetic molecular theory in describing gas behavior?
Answers: 2
Chemistry, 23.06.2019 02:30
When the ionic compound nabr dissolves in water, br– ions are pulled into solution by the attraction between what two particles? a. the na+ and br– ions b. the na+ ion and the negative end of a water molecule c. the br– ion and the positive end of a water molecule d. the br– ion and the negative end of a water molecule
Answers: 1
There are four sketches below. The first sketch shows a sample of Substance X. The three sketches un...
Biology, 06.07.2019 23:30
History, 06.07.2019 23:30
Geography, 06.07.2019 23:30
Mathematics, 06.07.2019 23:30
History, 06.07.2019 23:30
History, 06.07.2019 23:30
History, 06.07.2019 23:30
Social Studies, 06.07.2019 23:30
Mathematics, 06.07.2019 23:30
Mathematics, 06.07.2019 23:30
Mathematics, 06.07.2019 23:30