Mcgraw hill vocab

What is a Atom?

• A dot of something random

• building block of matter; contains subatomic particles— neutrons, protons, and electrons.

• A electron

• A name

What is a substance?

• Chemicals

• matter that does not composition always the same.

• matter with a composition that is always the same.

• Mother's Soap

What is a Element?

• more energy is released when the products form than is required to break the bonds in the reactants.

• A chemical reaction or process in which a greater amount of energy is required to break the existing bonds in the reactants than is released when the new bonds form in the product molecules.

• a magnet created by wrapping a current-carrying wire around a ferromagnetic core.

• a substance that consists of only one type of atom.

What is a Compound?

• substance composed of atoms of two or more different elements that are chemically combined.

• a system that does not exchange matter or energy with the environment.

• a mirror that curves inward.

• a lens that is thicker at the edges than in the middle.

What is a Chemical formula?

• circuit is complete and electric energy flows through the circuit.

• a group of chemical symbols and numbers that represent the elements and the number of atoms of each element that make up a compound

• a characteristic of matter that can be observed as it changes to a different type of matter.

• the energy released when atoms form bonds.

What is a Proton?

• an object’s distance and direction from a reference point.

• is a subatomic particle with a positive electrical charge.

• a substance produced by a chemical reaction

• the amount of force per unit area applied to an object’s surface.

What is Neutron?

• a subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen.

• any physical matter that is obtained or made from plants, animals, or the ground.

• the combination of all the forces acting on an object.

• an object at rest will stay at rest, and an object in motion will stay in motion unless a force acts on the object.

What is a electron?

• energy stored in objects that are compressed or stretched, such as springs and rubber bands.

• when colliding objects bounce off each other.

• negatively charged subatomic particle that together with protons and neutrons form an atom's nucleus. Learn why electrons are unique.

• the movement of electrically charged particles.

What is Subatomic particle?

• a material obtained from a natural material that has undergone a chemical reaction.

• any of various self-contained units of matter or energy that are the fundamental constituents of all matter.

• matter with a composition that is always the same.

• a measure of the distance an object travels in a given amount of time.

What is a Atomic number?

• the transfer of energy from a wave to the medium through which it travels.

• a measure of the change in velocity during a period of time.

• the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.

• n electric current that changes direction in a regular pattern.