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December 2025

42,840 public questions were asked this month.

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Recent questions

Latest from December 2025

Which type of reaction almost always produces water and carbon dioxide? double repalcement combustion decomposition single replacement
Asked by ja 1 answer
ionic radius anion cation valence electron
Asked by john 1 answer
Why do the noble gases Not form compounds? They have seven electrons in their outer energy level. Their outer energy levels are completely filled with electrons They have empty energy levels. They have no electrons.
Asked by lee 1 answer
Which best analyzes the poet’s use of line breaks and its effect? A. Line 1 is enjambed, running into the next line, echoing the way the train stops abruptly at the station. B. Line 1 is end-stopped, echoing the way the...
Asked by aubrey 1 answer
The two right triangles below both have an interior angle that measures 35°. Two right triangles of different size are shown. Each triangle has one interior angle labeled 35 degrees. Which statement best explains why the...
Asked by ., 1 answer
Vertical columns of elements on the periodic table are called: groups periods protons compounds
Asked by ja 1 answer
A molecule that is positively charged on one end and negatively charged on the other end is _____. nonpolar a hydrocarbon radioactive polar
Asked by lee 1 answer
The number of valence electrons in Group 17 elements is 7 8 17 18
Asked by john 1 answer
In line 1, the poet uses learn'd, which is a contraction of the word learned. Using context clues, choose the meaning of learn'd as it is used in the poem. A. boring B. famous C. respectable D. knowledgeable
Asked by aubrey 1 answer
When a log burns in a fire, _____________. new substances are formed. mass is lost. mass is gained. a physical change has occured.
Asked by ja 1 answer
Matter that has a definite volume but no definite shape is _____. plasma liquid solid gas
Asked by lee 1 answer
Which is equal to cos 27 ° ? A. sin 27 ° B. cos 57 ° C. sin 63 ° D. cos 63 °
Asked by ., 1 answer
A chemical bond results from the mutual attraction of the nuclei of atoms and electrons protons neutrons dipoles
Asked by john 1 answer
How many electrons are needed in the outer energy levels of most atoms for the atom to be chemically stable? 2 8 6 4
Asked by lee 1 answer
Atoms are ____ when they are combined more stable less stable not bound together with a higher energy state.
Asked by john 1 answer
Which of the following best describes how the poet uses alliteration to enhance the poem’s meaning? A. The alliteration in the words “heard" and “learn’d” (line 1) helps suggest the wisdom of the astronomer. B. The allit...
Asked by aubrey 1 answer
What is the product of the polynomials 3 x − 8 and − 6 x + 12 ? A. 66 x − 96 B. − 18 x 2 − 12 C. 18 x 2 − 12 x − 96 D. − 18 x 2 + 84 x − 96
Asked by ., 1 answer
What is the total number of atoms in the compound Ca3(Cl3)2 5 3 2 9
Asked by ja 1 answer
A chemical bond resulting from the electrostatic attraction between positive and negative ions is called a(n) covalent bond ionic bond charged bond electron configuration
Asked by john 1 answer
A covalent bond results when ____ are shared. protons neutrons electrons dot strucutres
Asked by john 1 answer
Which best explains how the structure of the poem reinforces its meaning? A. Structure: The poem falls into two parts. First, a series of clauses in lines 1–4 lead up to the main clause in line 5 (“I became tired and sic...
Asked by aubrey 1 answer
Increasing the surface area of a solid ______. speeds the rate of dissolving has no effect on the rate of dissolving causes the solid to ionize slows the rate of dissolving
Asked by ja 1 answer
The right to say what you think is called the right to _____________. The government protects rights so people can live _____________ and safely. Following rules and laws is an example of a _____________. The right to pr...
Asked by . 1 answer
Right triangle QRS is shown. Right triangle Q-R-S is shown with right angle R. The measure of angle Q is 65 degrees, the length of side R-S is 22 centimeters, and the length of hypotenuse Q-S is labeled x. What is x in t...
Asked by ., 1 answer
A neutral group of atoms held together by covalent bonds is called _____. Atom Nucleus Molecule Electron
Asked by john 1 answer