Table of Contents
What forces hold together the atoms in molecules quizlet?
A chemical bond is the force that holds the atoms of a molecules together, as in a compound. A chemical bond is an electrical force linking atoms.
What is the term for a type of reaction in which two substance react to produce a single compound?
Combination reaction. a type of reaction in which two substances produce a single compound.
How many atoms of sodium are in table salt whose formula is NaCl?
This is sodium chloride, also known as table salt. Most people scientist know that the formula for salt is NaCl. One sodium (Na) atom gives it’s electron to one chlorine (Cl) atom.
Which type of reaction occurs when two or more substances combine to form a new compound?
synthesis reactions
Combination reactions occur when two or more substances combine to form a new substance. Combination reactions can also be called synthesis reactions.
In what kind of reaction do the ions of two compounds exchange places?
double-replacement
A double-replacement (or double-displacement) reaction is a reaction in which the positive and negative ions of two ionic compounds exchange places to form two new compounds. Double-replacement reactions can form precipitates, gases, or molecular compounds.
What type of force keeps atoms together?
THE STRONG FORCE
THE STRONG FORCE—the greatest of the four forces! The strong forces oppose the electromagnetic force of repulsion between protons. Like ”glue” the strong force keeps the protons together to form the nucleus. The strong forces and electromagnetic forces both hold the atom together.
What hold the atoms together in the compound?
Chemical bonds are forces that hold atoms together to make compounds or molecules. Atoms with relatively similar electronegativities share electrons between them and are connected by covalent bonds. Atoms with large differences in electronegativity transfer electrons to form ions.
Why is sodium not found uncombined?
Chemical Properties: Sodium is a very reactive element and is never found in the uncombined state in nature. Sodium has one electron in its outer energy level that is the source of its chemical reactivity. Sodium metal reacts spontaneously with water to give sodium hydroxide and hydrogen gas.
How many atoms of sodium are there in the formula for table salt?
Sodium Chloride or NaCl is made up of two elements, sodium (or Na) and chlorine (or Cl). A molecule of sodium chloride, NaCl, consists of one atom each of sodium and chlorine. Hence, each molecule of NaCl has 2 atoms total.
When do two elements combine to form a compound?
One easy-to-recognize type of synthesis reaction occurs when two or more elements combine to form a compound. The other type of synthesis reaction happens when an element and a compound combine to form a new compound.
Which is the general form of a synthesis reaction?
A synthesis reaction or direct combination reaction is a type of chemical reaction in which two or more simple substances combine to form a more complex product. The reactants may be elements or compounds, while the product is always a compound. The general form of a synthesis reaction is:
How to identify a reaction in a chemical equation?
Basically, to identify this reaction, look for a product that contains all the reactant atoms. Be sure to count the number of atoms in both the reactants and the products. Sometimes when a chemical equation is written, “extra” information is given that might make it hard to recognize what is going on in a reaction.