Antoine Lavoisier
This French chemist is known as the “Father of Modern Chemistry.”
Who is Antoine Lavoisier?
This law states that matter cannot be created or destroyed in a chemical reaction.
What is the Law of Conservation of Mass?
These are the substances present before a chemical reaction occurs.
What are reactants?
Lavoisier used this tool to carefully measure mass during experiments.
What is a balance (or scale)?
Lavoisier showed that combustion involves this gas.
What is oxygen?
Lavoisier helped create this system for naming chemical compounds.
What is the modern chemical naming system (chemical nomenclature)?
According to this law, the mass of reactants is _____ the mass of products
What is equal to?
These are the substances formed after a chemical reaction.
What are products?
He often conducted experiments in sealed containers to ensure this.
What is preventing mass from escaping?
Before Lavoisier, scientists believed combustion was caused by this incorrect substance.
What is phlogiston?
He lived during this major historical event in France.
What is the French Revolution?
The Law of Conservation of Mass applies to this type of system.
What is a closed system?
A chemical reaction where a substance reacts with oxygen is called this.
What is oxidation (or combustion)?
These experiments showed that mass remains constant even when this happens.
What is a change of state (or a chemical reaction)?
Rusting is an example of a slow reaction with oxygen called this.
What is oxidation?
Lavoisier worked with his wife, Marie-Anne, who helped by doing this important task.
What is illustrating scientific experiments (or translating scientific work)?
If 10 g of hydrogen reacts with 80 g of oxygen, the total mass of products will be this.
What is 90 grams?
In a balanced equation, the number of atoms of each element on both sides must do this.
What is stay the same / be equal?
Lavoisier’s careful measurements helped turn chemistry into this type of science.
What is a quantitative science?
Burning magnesium in air increases mass because it combines with this.
What is oxygen from the air?
This was the tragic cause of Lavoisier’s death in 1794.
What is execution by guillotine?
What old scientific theory did the Law of Conservation of Mass disprove?
What is the phlogiston theory?
This type of reaction appears to lose mass if gases escape.
What is an open-system reaction involving gases?
This type of data (qualitative or quantitative) was most important in proving the law.
What is quantitative data?
This was one reason mass seemed to increase during combustion experiments.
What is oxygen being added from the air (or gases not being measured)?