6th-Atoms and Molecules

what is the term for atoms that have gained or lost electrons?

metalloids only have properties of nonmetals

what is the term on the periodic table for when you add protons and neutrons together?

what is the term used to describe the number of protons in an element?

________________________ are the horizontal rows on the periodic table.

what is the term for when atoms come from 2 or more different elements during a chemical reaction?

_____________________ are formed when atoms join with other atoms to form units.

what is a substance that contains only one kind of atom?

what is chemistry?

when the outer shell of an atom is completely full the shell closes. That means the atom is unstable.

what is a compound that is made of 2 or more substances that are not chemically linked?

what part of the atom has no charge?

what is the smallest unit of an element?

what is formed by hydroxide ions when they are dissolved in water?

______________ are vertical columns on the periodic table.

a normal atom has a different number of protons and electrons.

which of the following is NOT one of the 3 main parts of an atom?

Dmitri Mendeleev is the scientist who came up with a system to organize all of the elements known at the time.

metals are gas at higher temperatures, but they are solid at room temperature.

the main part of the atom that has a positive charge is called the ___________________.

ionic bonds form when positive and negative ions attract each other, and the bonds are held together by opposite charges

what part of an atom has a negative charge?

the nucleus is the center of the atom that is made up of ___________ and _________________.

anything that has mass and takes up space is called _________________.

Niels Bohr is known for research on the atomic structure, and he even developed the atomic bomb.

what group of elements on the periodic table are gas at room temperature and not good conductors of heat and electricity

which of the following is characteristic of metals?

what is formed when hydrogen ions dissolve in water?

what is the space representing the average distance from electrons from the nucleus?

the atomic theory of atoms is based on the idea that electrons move in shells