Substances (1)
A substance that often has a PH level greater than 7.
What is a base?
Any substance that consists of atoms, molecules or ions.
What is a chemical?
An element that is typically shiny, malleable, ductile, and a good conductor of heat and electricity.
What is metal?
A measure of the average kinetic energy of the particles in a substance.
What is temperature?
An atom or group of atoms with a positive or negative electric charge due to the loss or gain of electrons.
What is an ion?
A substance that often has a PH of less than 7
What is an acid?
A substance that contaminates the environment and may harm living organisms.
What is a pollutant?
An element that is typically not shiny, not malleable, and a poor conductor of heat and electricity.
What is a non-metal?
The total area exposed on the surface of a substance, which can affect the rate of chemical reactions.
What is surface area?
The branch of science that studies the composition, properties, and interactions of matter.
What is chemistry?
A substance composed of two or more elements chemically combined in a fixed ratio.
What is a compound?
A starting substance in a chemical reaction that undergoes change.
What is a reactant?
A pure substance that cannot be broken down into simpler substances by chemical means.
The amount of a substance present in a given volume of solution.
What is concentration?
A theory that states chemical reactions occur when particles collide with sufficient energy and proper orientation.
What is the collision model?
A substance formed as a result of a chemical reaction.
What is a product?
A substance that speeds up a chemical reaction without being consumed in the process.
What is a catalyst?
A chemical reaction in which a substance reacts with oxygen, producing heat, light, and new products like water and carbon dioxide.
What is combustion?
A measure that determines of a substance is an acid or a base.
What is pH?
A characteristic of a substance that can only be observed during a chemical change, such as flammability or reactivity.
What is a chemical property?
A combination of two or more substances that are physically combined and retain their individual properties.
What is a mixture?
A characteristic of a substance that can be observed without changing its chemical composition, such as color, density or melting point.
What is a physical property?
A change that results in the formation of one or more new substances with different properties.
What is chemical change?
The outermost electron shell of an atom that determines its chemical reactivity.
What is valence level?