Which of the following is a correct way to write chemical equations?
A) Products are shown only if they are gases
B) Reactants are shown to the right of the arrow
C) Products are shown to the right of the arrow
D) Reactants are shown only if they are solids
Answer: C) Products are shown to the right of the arrow
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Introduction to Chemistry
- Which classification of elements on the periodic table does not combine chemically with other elements?
- Any atom, except hydrogen and helium, is considered chemically stable when there are how many electrons in the outermost shell?
- What type of chemical bond is usually formed between atoms that readily give up electrons and atoms that readily accept electrons?
- Atoms that have become charged from losing or gaining electrons are called ______.
- All of the elements in a vertical column of the periodic table have ______.
- Two or more elements combine chemically to form a _______.
- What happens in a single displacement reaction?
- The quantity of an element that has a weight in grams numerically equal to the element's atomic weight is called _______.
- When the maximum amount of solute that the solvent can dissolve is added, it is called a ______ solution.
- The nucleus of an atom is comprised of ______.
- The notation that expresses the number of electrons involved when an atom reacts chemically is the ______ number.
- What type of chemical bond is formed when electrons are shared between atoms?
- Which of these is the best way to express the formula HOH?
- Which classification of elements on the periodic table tends to give up electrons when combining chemically with other elements?
- When a compound is formed, the total of all the valences must equal _____.
- What happens in a decomposition reaction?
- Most water solutions can conduct electricity to varying degrees and are called ______ solutions.
- What is the smallest particle of an element that still retains the chemical properties of that element?
- Water will dissolve ionic compounds because____________.
- The properties of a sample of a ______________ mixture depends on the location from which the sample was taken.
- The atoms contained in this type of matter are of two or more kinds
- A mixture of table sugar and water is an example of which type of matter?
- The atoms contained in this type of matter are of the same kind
- Matter that varies in composition and properties describes which classification of matter?