Properties of Matter
This type of property can only be observed if the substance changes into a new substance.
What is a chemical property?
The type of change occurring when ice melts.
What is physical change?
The smallest unit of matter.
What is an atom?
The atomic number of an atom is equal to the number of ________________.
What is protons?
The type of reaction that absorbs heat and makes the surrounding temperature go down.
What is an endothermic reaction?
What is flammability?
The type of change occurs when iron rusts.
What is chemical change?
A substance made up of two or more different types of atoms that are chemically combined.
What is a compound?
What is the nucleus?
What is an exothermic reaction?
This property describes whether a substance is acidic or basic.
What is pH?
Formation of bubbles is a clue that a ____________change has occured.
What is chemical change?
A mixture that has a uniform composition throughout.
What is a homogeneous mixture?
The subatomic particle that affects an atom's ability to bond with other atoms.
What is an electron?
The law that states that matter can't be created or destroyed.
What is the Law of Conservation of Mass?
Name three physical properties of water.
What is colorless, liquid at room temperature, and odorless?
The term for when a solid forms in a solution during a chemical change.
A salad is an example of this type of mixture.
What is a heteregeneous mixture?
Atomic mass is equal to
What is protons + neutrons?
What are the metals, non-metals, and metalloids?
This physical property of a fluid describes its resistance to flow.
What is viscosity?
List five clues that a chemical change has occured.
Formation of bubbles, formation of a precipitate, light energy, change in temperature, odor, sound energy, color change
The number of total atoms in this compound H2SO4
The electrons located on the outermost electron energy level that determine how reactive an element is.
What are valence electrons?
The state of matter with the lowest density and highest energy of particles.
What is a gas?