All the elements of a family in the periodic table have what feature in common? A) They all have similar chemical properties. B) They all have the same number of protons in the nucleus. C) They are all located in the same horizontal row or period. Eliminate D) They all have the same number of electrons in the electron cloud.
Answers
The correct answer is A) They all have similar chemical properties.
Explanation:
In chemistry, the periodic table organizes visually the chemical elements. In this, elements are arranged according to different features. In the case of families of the elements, these refer to elements organized in the same column, for example, elements that are in column 18 form a family called noble gases.
These elements form a family because they have chemical properties; in the case of noble gases, this includes similar reactivity and physical features such as color and odor. Besides this, the elements of one family share a similar electron configuration but not the same number of electrons. This means, from the options given the one that identifies the elements that belong to a family is "They all have similar chemical properties".
Each set of elements has an equal number of electrons in the outer orbital. We refer to these as valence electrons. Each element's chemical characteristics are determined by its valence electrons. The correct option is A.
The elements in the same group or column of the periodic table are those whose chemical characteristics are the most comparable. The vertical groups of elements that have the same number of valence electrons and, consequently, comparable chemical characteristics are formed when the elements are arranged in order of atomic number.
Only when matter changes to become a completely other sort of matter can chemical characteristics be measured or observed. They consist of flammability, reactivity, and rusting potential.
Thus the correct option is A.
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Which is an example of a response?a. water lost from the lungs during breathingb. ivy growing around the pole of a fencec. the angle of the sun changing during the dayd. outside temperature dropping at night
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Answers
Answers
Both are types of potential energy, and Involve stored energy.
Oxidation
Glycolysis
Hydrolysis
Answers
Glycolysis is a process that helps fuel your metabolism. It is apart of cellular respiration the process that helps produce ATP.
Explanation:
Glycolysis is the metabolic process that assists as the grounds for both aerobic and anaerobic cellular respiration. In glycolysis, glucose is transformed into pyruvate. Glucose is a six-membered circle molecule found in the blood and is regularly a result of the breakdown of carbohydrates into sugar.
Glycolysis is the process that helps fuel your metabolism. It generates energy in the form of ATP through the breakdown of glucose.
The metabolic process that helps fuel your body is known as Glycolysis. This is a series of reactions that takes place in the cell's cytoplasm, where glucose (a simple sugar) is broken down into two molecules of pyruvate. This process generates energy which gets stored in the form of ATP (adenosine triphosphate), a molecule that allows the body to perform various functions like muscle contraction, nerve impulse propagation, and chemical synthesis, etc. Hence, glycolysis supports the metabolism by providing necessary energy to the body.
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Answers
Explanation:
An equation that contains equal number of atoms on both reactant and product side is known as a balanced chemical equation.
Whereas when there will be increase in oxidation number of the atom then it is known as oxidation. When there is decrease in oxidation number of the atom then it is known as reduction.
For example,
Oxidation half reaction :
Reduction half reaction :
Therefore, we can conclude that sulfur atom has undergone oxidation and nitrogen atom has undergone reduction.
2HNO3 + S ---> 2NO + H2SO4
Answers
Answer:
Mass of aluminium foil = 387.57_g
Explanation:
density of aluminium foil 2.70 g/cm³,
1_yd = 91.44_cm
1_in = 2.54_cm
Length of aluminum foil = 63.2_yd = 5779.008_cm
Width of aluminium foil = 11 in = 27.94_cm
Thickness of aluminium foil = 0.00035_in. = 0.000889_cm
Volume of aluminium foil = length × width × thickness = 5779.008_cm × 27.94_cm × 0.000889_cm = 143.54_cm^3
Mass of aluminium foil = (volume of aluminium foil) × (density of aluminium foil) = 143.54_cm³ × 2.70 g/cm³ = 387.57_g
Final answer:
To find the mass of the aluminium foil, calculate the volume and multiply it by the density. The mass of the foil is 0.3878 grams.
Explanation:
To find the mass of the aluminium foil, we need to calculate the volume and then multiply it by the density. First, let's convert the dimensions to the same unit. The aluminium foil is 63.2 yd long, which is equivalent to 190.4 ft. The width is 11 in, which is 0.92 ft, and the thickness is 0.00035 in, which is 2.92e-5 ft.
The volume of the foil can be calculated by multiplying the length, width, and thickness.
V = (190.4 ft) * (0.92 ft) * (2.92e-5 ft).
This gives us a volume of 5.0634e-3 cubic feet.
Next, we need to convert the volume to cubic centimetres because the density is given in g/cm³.
There are 28.3168 cubic centimetres in one cubic foot, so the volume in cm³ is
5.0634e-3 * 28.3168 = 0.1433 cm³.
Finally, we can calculate the mass by multiplying the volume by the density.
Mass = 0.1433 cm³ * 2.70 g/cm³ = 0.3878 grams.
So, The mass of the foil is 0.3878 grams.
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Answers
Answer:
the answer i belive is c
Explanation:
A chemical reaction occurs because heat and light are given off.
Explanation:
A property which causes change in chemical composition of a substance is known as a chemical property. For example, reactivity, toxicity, combustion etc.
Whereas a property which causes no change in chemical composition of a substance is known as a physical property. For example, mass, volume, density etc.
Sodium is a very reactive metal and it reacts readily with oxygen, water etc. So, when sodium is added to water then occurrence of an orange flame represents its reactivity.
Thus, based on given observation it can be concluded that chemical reaction takes place when sodium is added to water.