changes/reaction
What is a change in a substance that does not involve a change in the type of substance?
a physical change
What word describes a substance that cannot be dissolved?
Insoluble
What do you call Elements and compounds
a Pure substance
What is a reaction that ABSORBS energy in the form of heat, feels colder?
Endothermic Reaction
What do you call the chemical symbols and numbers to represent the elements and number of atoms in a molecule?
Chemical Formula
What is a Type of mixture when placed in water causes a chemical reaction which creates gas bubbles.
a Bath bomb
What is the word for capable of being dissolved?
Soluble
What is a pure substance made of only one kind of atom?
Element
What is chemical reaction in which heat is released to the surroundings, feels hotter?
Exothermic Reaction
What do you call the formation of a gas (bubbles form) or precipitate (solid forms in liquid); Change in Energy - heat, light, sound; Unexpected change in color (not adding food coloring)?
Chemical Reaction Indicators
What is a process that produces one or more substances that are different from the original substance? (A new substance is created)
A chemical change
What do you call it when molecules of a solid separate and mix into a liquid?
Dissolving
What is a single small particle. Each element is a different type of ____?
Atom
What are characteristics of a substance you can observe with your senses?
Observable Physical Properties
What is the name of the law that states Matter is not created nor destroyed in any chemical or physical change. Mass/number of atoms remains the same?
Law of Conservation of Mass
What do you call the starting substances in a chemical reaction?
Reactants
What is a homogeneous mixture of two or more substances?
Solution
What is a group of atoms bonded together?
Molecule
What are characteristics of a substance you need tools to observe.
Measurable Physical Properties
What does Qualitative mean?
An observation with numbers
What do you call a new substances formed as a result of a chemical reaction?
Products
What is a substance that is dissolved in a solution? (bonus 100 points)(What is a liquid substance capable of dissolving other substances?)
Solute
(bonus)(solvent)
What is a combination/blend of two or more substances, not chemically bonded.
a mixture
What is a number in a chemical formula that tells the number of atoms in a molecule?
Subscript
What does Qualitative mean?
An observation using your 5 senses or not using numbers.