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How do atoms move from left to right in each period what do you call it?
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What do you count to decide whether or not an equation is balanced?
If you count all of the atoms of each element on the left and all the atoms of each element on the right and the numbers on the left and right are equal for EVERY element, then the equation is balanced.
What do you notice about the number of atoms on each side of a chemical equation?
That the number of atoms on the left side of the equation must be the same number of atoms that are on the right side of the equation.
Name each element in glucose and state how many atoms of each element there are?
C6H12O6. Six carbon atoms, 12 hydrogen atoms and six oxygen atoms.
What don't most hydrogen atoms contain?
Most hydrogen atoms don't contain any neutrons. Deuterium atoms are hydrogen atoms with one neutron each, and tritium atoms are hydrogen atoms with two neutrons each, but most hydrogen atoms are protium atoms, with no neutrons at all. All other atoms in the universe except protium contain at least one neutron each.
How many atoms of oxygen are there on each side what chemical equation 2 Mg O2 -- 2 MgO?
There are two atoms of oxygen on each side.
How does the size of the atoms of the elements in the period vary from left to right?
It increases. Read the atomic numbers; they go up by one, with each space you move to the right, meaning there is one more proton in the nucleus.
What do you count to decide whether or not an equation is balanced?
If you count all of the atoms of each element on the left and all the atoms of each element on the right and the numbers on the left and right are equal for EVERY element, then the equation is balanced.
Why must you put atoms that are alike at right angles to each other?
You do not! In graphite, for example, atoms of carbon are in the form of hexagons.
What do you notice about the number of atoms on each side of a chemical equation?
That the number of atoms on the left side of the equation must be the same number of atoms that are on the right side of the equation.
How can I tell if a chemical reaction is balanced or not balanced?
If the equation has the same number of each type of atom on both sides of the arrow, it is balanced. If the number of atoms on each side of the arrow is not the same, the equation is not balanced. For example, in the equation H2 + O2 -->H2O, there are two hydrogen atoms and two oxygen atoms on the left, and two hydrogen atoms and one oxygen atom on the right. Therefore, the equation is not balanced. However, in the equation 2H2 + O2 -->2H2O, there are four hydrogen atoms and two oxygen atoms on the left and four hydrogen atoms and two oxygen atoms on the right, so the equation is balanced.
Why do the properties of elements change across the period?
They change because the atomic number and mass differ from each other element. Going across the Periodic Table to the right, the atoms get smaller because another proton is added each time so the effective nuclear charge experienced by the electrons is greater and the electrons are pulled closer to the nucleus. Electronegativity increases as you progress across a period because smaller atoms are usually more likely to gain an electron. Ionization energy increases across a period because the atoms are smaller, pulled closer to the nucleus, so it takes more energy to break an electron away.
Every balanced chemical equation each side has the same number of?
same number of each element
What do notice on the atomic number of elements in a row as one goes to the right of the table?
The atomic number increases from left to right across a period (row). This is because the atomic number is the number of protons in the nuclei of the atoms of each element. No two elements have the same atomic number. It is the protons that define an element.
What does a chemical formula have to do with elements and atoms?
The chemical formula of a compound shows the number of atoms of each element in the smallest unit of the compound. The smallest unit is a molecule for covalently bonded compounds and the minimum number of each of the right kinds of atoms to achieve electro-neutrality for ionically bonded compounds.
Periods are what that run left to right?
Yes periods run from left to right (horizontal) on a periodic table and they also tell you how many shells of electrons or energy levels each element has. E.g. Bromine is in the row of period 4 and has 4 energy levels or you can say 4 shells of electronsGroups are the vertical columns and the number of each group tells you how many electrons are in the outer shell of the element. E.g. Sodium (Na) is in goup 1 and its electronic configuration is 2.8.1 -it has 1 electron in its outer shell.
Are atoms in a molecule held together by shared electrons?
Yes sometimes, that is how covalent bonds are formed.
Name each element in glucose and state how many atoms of each element there are?
C6H12O6. Six carbon atoms, 12 hydrogen atoms and six oxygen atoms.
