The Periodic Table
The element with the symbol O
What is oxygen?
The particle with a negative charge
What is an electron?
This type of reaction combines two or more substances to make one product
What is synthesis?
The pH of a neutral solution
What is 7?
The gas we breathe in to stay alive
What is oxygen?
The most reactive group of metals in the periodic table
What are the alkali metals?
The center of an atom is called the ____
What is the nucleus?
This type of reaction always produces carbon dioxide and water when complete
What is combustion?
The acid found in lemons and other citrus fruits
What is citric acid?
The gas that makes up the majority of Earth’s atmosphere
What is nitrogen?
The element with 11 protons
What is sodium?
Isotopes of the same element have the same number of protons but different numbers of ____
What are neutrons?
The starting substances in a chemical reaction
What are reactants?
This base is found in many household cleaning products and has the formula NaOH
What is sodium hydroxide?
The chemical formula for table salt
What is NaCl?
This group of elements does not react because they have full outer shells
What are the noble gases?
The total number of protons and neutrons in an atom is called this
What is the mass number?
The law that says matter is neither created nor destroyed in a chemical reaction
What is the law of conservation of mass?
Substances that change color depending on pH, like litmus paper
What are indicators?
The compound that plants make during photosynthesis, with the formula C₆H₁₂O₆
What is glucose?
The scientist who arranged the first periodic table
Who is Dmitri Mendeleev?
The person who discovered the nucleus with his gold foil experiment
Who is Ernest Rutherford?
This type of reaction occurs when one element replaces another in a compound
What is single replacement?
Acids taste ____, while bases taste ____
What are sour and bitter?
The gas produced when vinegar reacts with baking soda
What is carbon dioxide?