Chemical Reactions
In a chemical reaction, what do we call the starting substances?
Reactants
What substance is dissolved in a solution?
Solute
Who is known for developing the periodic table and predicting the properties of undiscovered elements?
Dmitri Mendeleev
What is the smallest unit of an element that retains its chemical identity?
Atom
What section of a packaged food label lists the ingredients used to make the product?
Ingredients list
What do we call the substances formed as a result of a chemical reaction?
Products
What substance dissolves the solute in a solution?
Solvent
Who proposed an early modern atomic theory stating that matter is composed of atoms?
John Dalton
What type of substance has a pH below 7 in an aqueous solution at about 25°C?
Acid
What date on a product label helps consumers determine its recommended period of use or storage?
Expiration date
What law states that matter is neither created nor destroyed during an ordinary chemical reaction?
Law of Conservation of Mass
What term describes the amount of solute present in a given amount of solution or solvent?
Concentration
Which scientist's gold foil experiment provided evidence for a small, dense atomic nucleus?
Ernest Rutherford
What do we call a substance made of two or more elements chemically combined in fixed proportions?
Compound
What does the hazard symbol showing a flame generally warn consumers about?
A flammable substance or fire hazard
What do we call a chemical equation that has the same number of atoms of each element on both sides?
Balanced chemical equation
What type of solution contains less solute than the maximum amount it can dissolve under specified conditions?
Unsaturated solution
Which Polish-born scientist conducted pioneering research on radioactivity and discovered polonium and radium with Pierre Curie?
Marie Curie
What type of bond forms when one atom transfers electrons to another atom, producing oppositely charged ions?
Ionic bond
FDA means?
Food and Drugs Authority
When vinegar reacts with baking soda and bubbles form, what gas is commonly released?
Carbon dioxide
What term describes a solution's ability to dissolve a particular amount of solute under specified conditions?
Solubility
Which scientist discovered the neutron?
James Chadwick
What is the term for a substance that speeds up a chemical reaction without being consumed overall?
Catalyst
What common household substance is chemically known as sodium bicarbonate?
Baking soda