Basic Chemistry
The smallest unit of matter
What is an atom?
The chemical formula for water.
What is H₂O?
A process where substances are changed into new substances.
What is a chemical reaction?
New substances formed as a result of chemical change.
What are products?
A force of attraction between atoms or a group of atoms due to the sharing of transferring of electrons.
What are chemical bonds?
The center of an atom.
What is the nucleus?
The building blocks that make up molecules.
What are atoms?
The substances you start with in a chemical reaction.
What are reactants?
Substances that undergo a chemical change.
What are reactants?
The force of attraction between molecules of different substances so that they tend to stick together.
What is Adhesion?
The three subatomic particles in an atom.
What are protons, neutrons, and electrons?
The term for a molecule made from only one type of atom.
What is an element?
The substances produced by a chemical reaction.
What are products?
An atom or a group of atoms that has a positive or negative charge.
What are ions?
This gas makes up about 78% of Earth’s atmosphere.
What is nitrogen?
The negatively charged particle in an atom.
What is an electron?
This is what we call a combination of two or more different atoms bonded together.
What is a compound?
A gas often produced during chemical reactions like baking soda and vinegar.
What is carbon dioxide?
Force that forms between molecules not between atoms.
What are hydrogen bonds?
As you go higher in the atmosphere, air pressure does this.
What is decrease?
The number of electrons in a neutral atom with 8 protons.
What is 8?
This type of bond is formed when atoms share electrons.
What is a covalent bond?
This happens when something new is made and you can’t go back to how it was before.
What is a chemical change?
The force of attraction between molecules of the same substance so that they tend to stay together.
What is cohesion?
The temperature at which water vapor condenses into liquid water is called this.
What is the dew point?