Vocabulary
The “recipe” that shows what elements and how many atoms are in a substance.
What is a chemical formula?
Bond formed when electrons are shared between atoms.
What is a covalent bond?
Balancing an equation means both sides must have the same number of ______.
What are atoms?
Water droplets stay round because of this property.
What is surface tension?
Positive ions are called ______.
What are cations?
The starting substances in a chemical reaction.
Answer: What are reactants?
Bond formed when electrons are transferred between a metal and a nonmetal.
What is an ionic bond?
True or False: Subscripts can be changed when balancing equations.
False (only coefficients can be changed).
Attraction between identical molecules (like water to water).
What is cohesion?
Negative ions are called ______.
What are anions?
The substances formed in a chemical reaction.
What are products?
Bond that gives metals their ability to conduct electricity.
What is a metallic bond?
The balanced equation for water: 2H₂ + O₂ → ______.
What is 2H₂O?
Attraction between different substances (like water to glass).
What is adhesion?
Oxygen (O₂) is an example of this type of molecule made of the same element.
What is a diatomic molecule?
A particle with a charge, either positive or negative.
What is an ion?
The weak attraction between polar molecules, like water molecules sticking together.
What is a hydrogen bond?
In C₆H₁₂O₆, how many oxygen atoms are there?
6
These two forces help water move up through plant stems.
What are cohesion and adhesion?
The element with the strongest pull on electrons (highest electronegativity).
What is fluorine?
The numbers in front of molecules that balance an equation.
What are coefficients?
A molecule with an uneven charge distribution.
What is a polar molecule?
The main steps to balancing equations are: (1) Write the unbalanced equation, (2) Add ______, (3) Check atom counts.
What are coefficients?
Water is liquid at room temperature because of these bonds.
What are hydrogen bonds?
Water is polar but CO₂ is not, because water is ______ and CO₂ is ______.
What is bent (asymmetrical) and linear (symmetrical)?