Sample response: Susana's red crystal sample is a compound because it was broken down into a gas and blue powder. It is not an element because elements cannot be broken down into simpler substances by ordinary means, such as heating.
This is late but if anyone needs it here you go.
also how many grams of salt NaCl will be produced and how many grams of water H2O be produced?
Periodic trends are patterns in the periodic table that help predict certain properties of elements. They include atomic radius, ionization energy, and metallic character, which change based on the element's position in the table.
Periodic trends refer to specific patterns presented in the periodic table that reflect different aspects of a certain element, including its size and electronic properties. They are instrumental to chemists as they provide a tool for quickly predicting an element's properties. These trends occur because of the similar atomic structure of the elements within their respective group families or periods, and due to the periodic nature of the elements.
Majorperiodic trendsconsist of atomic radius, ionization energy, and metallic character. As an example, ionization energy and electronegativity typically intensify from left to right in a row and from the base to the top in a column. In contrast, the atomic size and the metallic character increase from right to left in a row and from the top to the bottom in a column. The periodic table's structure allows us to qualitatively evaluate how these properties of the elements change based on their position on the table.
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b. 10 grams
c. 20 milligrams
d. 50 grams
Answer: 20 milligram per kilo gram of food.
Explanation:
FDA: Food and drug Administration
According to FDA, product labelled as gluten free must contain 20 parts per million gluten. This also means that 20 milligram of gluten per kilo gram of food. or we can also say that 20 milligrams of gluten per 35.27 ounce of food.
Hence,the correct answer is option (c).
2. Separating a liquid from an insoluble solid sediment by carefully pouring the liquid from the solid without disturbing the solid.
3. The process of vapor returning to the solid phase without a liquid phase in between.
4. Heating a mixture to vaporize a volatile liquid component to make the remaining component dry.
5. Separating a solid from a liquid using a porous material, such as paper, charcoal, or sand, as a filter.
6. Using a solvent to selectively dissolve one or more components from a solid mixture.
A. Sublimation
B. Solids that Sublime
C. Extraction
D. Decantation
E. Evaporation
F. Filtration
Answer:
Explanation:
1 = A
Sublimation is the process where by a sample is heated to pass through solid phase to gaseous phase without the intermittent liquid phase. Example of substance that sublime is camphor.
2 = D
Decantantion
5 = F
Filtration is the process a liquid from solid using a porous material. This technique requires a set up and a good porous material eg filter paper.
6 = B
This technique is to separate a mixture of solids by converting them from solid phase to gaseous phase since they sublime.
3 = deposition.
The answer isn't in the option but deposition is the process of substance in gaseous phase to change into solid state without passing through liquid phase. Deposition is the opposite of sublimation.
4 = E