Which best characterizes a crystal?a number of high speed particles moving randomly
***a dense substance that is hard and incompressible ***
a high-energy state of matter made up of a swirling, ionized gas
a loose association of particles moving past one another
Answers
a dense substance that is hard and incompressible
Halite crystal is growing and can attach very quickly and eventually form a smooth, stable faces where new atoms can easily attach themselves.
Related Questions
What is the total mass of solute in 1000. grams of a solution having a concentration of 5 parts per million?(1) 0.005 g (3) 0.5 g(2) 0.05 g (4) 5 g
Which of the following summarizes photosynthesis?A. glucose + carbon dioxide → oxygen + waterB. carbon dioxide + water → glucose + oxygen + waterC. oxygen + water → glucose + carbon dioxide + waterD. carbon dioxide + oxygen → glucose + oxygen + water
How does water help cells keep an even temperature despite temperature changes inthe environment?
Which substance is NOT a compound?a. salt b. sodium c. pure water d. carbon monoxide
Answers
(b) CH3Cl - Chloroform ; polar molecules. Both dispersion and dipole-dipole forces are present.
(c) PF3 - Phosphorus triflouride ; has polar bonds but has nonpolar molecule due to its symmetrical structure. Only dispersion forces are present.
(d) NaCl - Sodium chloride ; ionic compound. Both ion-ion and dispersion forces are present.
(e) CS2 - Carbon disulfide ; nonpolar molecules. Only dispersion forces are present.
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The compound that yields H+ as the only positive ions when in solution are generally acidic.
Definition of acids
Acids are generally defined as substances that produce hydrogen ions as their only positive ions in aqueous solutions.
Going by this definition, only CH3COOH is able to ionize in an aqueous solution according to the following:
CH3COOH ---------> CH3COO- + H+
Others ionize to give positive ions other than H+.
More on the definition of acids can be found here: brainly.com/question/3655298
Answer: (4)
Explanation:-
According to Arrhenius concept, a base is defined as a substance which donates hydroxide ions when dissolved in water and an acid is defined as a substance which donates hydronium ions
in water.
1. is a strong electrolyte and thus dissociate in water.
2. is a non electrolyte and thus do no dissociate in water.
3. is a strong electrolyte and thus dissociate in water.
4. is a weak electrolyte and thus partially dissociate in water.
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Answer:
The correct, chemically balanced equation for photosynthesis is: b. 6CO2+12H2O+radiant energy -> C6H12O6+ 6H2O+6O2
Explanation:
Photosynthesis is the synthesis of a compound which is more complex than CO2, O2 and H2O. It requires the presence of radiation/sunlight. Therefore, c, d, and e are incorrect. C6H12O6 is produced in the photosynthesis, not decomposed. O2 is generated in the photosynthesis. Analyzing both a and b, the only chemically balanced equation is b. The option a has an excess of carbon that is not reflected on the right side of the equation.
B)absorbs harmful radiation.
C)helps clouds form.
D)causes rain to fall.
2.
A. a
B. b
C. c
D. d
Answers
Answer:
B
Explanation:
Final answer:
Ozone in the Earth's atmosphere is crucial because it absorbs most of the sun's harmful UV radiation, protecting living beings from potential health risks. The correct answer is option B.
Explanation:
The ozone in Earth's atmosphere is primarily important because it absorbs harmful radiation. More specifically, it absorbs the majority of the sun's ultraviolet (UV) radiation, which can cause a variety of health issues like skin cancer and cataracts in humans and can also be detrimental to certain types of plant and marine life. Without the protective layer of ozone, these harmful UV rays would reach Earth's surface in much larger amounts.
Learn more about Ozone here:
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In living things, enzymes serve as a catalyst.
What is catalyst?
A material known as a catalyst would be an element or just a compound that quickens chemical reactions. The procedure of catalysis involves introducing a catalyst to a chemical reaction to speed up the process. The reaction does not consume catalysts, and they are unaffected after it.
What are Enzymes?
Proteins called enzymes serve as biological catalysts. Chemical reactions are accelerated by catalysts. Numerous biological processes, including development, blood clotting, disease treatment, respiration, digestion, reproduction, as well as many more, are aided by enzymes.
Proteins are called enzymes to catalyze chemical reactions in our bodies. By reducing the activation energy, they serve as a catalyst to quicken the process. The enzyme has been referred to as a biocatalyst since it speeds up a chemical reaction again without altering its equilibrium.
Therefore, In living things, enzymes serve as a catalyst.
Hence, the correct answer will be option (B)
To know more about enzymes and catalyst.
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Enzymes are biological catalysts that help cause reactions in your body.
(1) The president did not have the power to veto
legislation.
(2) The legislative branch enacted an unfair tax
program.
(3) The Supreme Court refused to pay
Revolutionary War debts.
(4) The national government was too weak to
solve the nation’s problems.
Answers
Answer : Option 4) The national government was too weak tosolve the nation’s problems.
Explanation : The main reason for the Federalists wanted to replace the Articles of Confederation because they believed that the structure the Articles which were laid out did not provided enough power for the federal government to effectively solve the nation's problems. It projected the image of the federal government being weak for solving nation's problem.
The Articles of Confederation were only meant to be temporary, like a stand in, until a better document, eventually known as the constitution, could be created.