Acids
What is the pH scale used to measure in chemistry
What is acidity
If a chemical reaction requires energy to proceed, is it classified as endothermic or exothermic
An endothermic reaction
The name of the bond formed between a metal and a nonmetal
What is an ionic bond
The symbol for the element with atomic number 11?
What is $Na$( Sodium.)
What is the number of protons in the nucleus of an atom
What is the name of the acid found in lemons
What is citric acid
What is the term for the minimum amount of energy needed to start a chemical reaction
Activation energy
The term for the sharing of electrons between two nonmetal atoms
The amount of elements in the periodic table
What is 118 elements
The smallest unit of an element that retains the properties of that element
What is an atom
What type of acid is found in vinegar?
What is acetic acid
In a chemical equation, the number of atoms of each element is conserved. What law does this represent
Law of conservation of mass
How many valence electrons does an atom of oxygen have
6 valence electrons
The group of elements found in Group 18 of the periodic table
What are Noble Gases
The central part of an atom that contains protons and neutrons
What is the nucleus
What is the pH of a neutral substance?
What is 7
When a substance undergoes a chemical change and forms new substances, what is it called
What type of bond is formed when atoms share an equal number of electrons
What is a nonpolar covalent bond
The term for a horizontal row in the periodic table
What is a period
The name of the particles with a positive charge found in the nucleus of an atom
What are protons
What type of acid is commonly found in oranges?
What is citric acid
What type of reaction occurs when two elements swap atoms to form new compounds
What is Double Displacement Reaction
In a metallic bond, what holds the metal atoms together
What is the sea of delocalized electrons
The element with the atomic number 29 in the periodic table
What is Copper
The term for atoms of the same element that have different numbers of neutrons
What are isotopes