The Basics
A well tested explanation of a phenomenon in the natural world
What is a SCIENTIFIC THEORY?
Anything that has mass and takes up space
What is MATTER?
The smallest chemical unit of an element
What is an ATOM?
A force of attraction between atoms or a group of atoms due to the sharing or transferring of electrons
What is a CHEMICAL BOND?
A chemical reaction in which two or more substances react to form a single compound
What is a SYNTHESIS REACTION?
A possible, testable explanation for one or more observations or a suggested, testable answer to a question
What is a Hypothesis
The energy an object has due to its motion
what is KINETIC ENERGY?
The number of protons in an atom
What is ATOMIC NUMBER?
An atom or group of atoms that has a positive or negative charge
What is an ION?
A chemical reaction in which a compound breaks down into two or more simpler substances
What is a DECOMPOSITION REACTION?
A factor that can change in an experiment
What is a VARIABLE?
A pure substance that cannot be broken down into a simpler substance and contains only one type of atom
What is an ELEMENT?
The sum of the protons and neutrons in the nucleus of an atom
A molecule that has slight positive and negative charges due to an imbalance in the way electrons are shared
The energy stored in chemical bonds
A well-tested description of one phenomenon in the natural world that often includes mathematical terms
What is a SCIENTIFIC LAW?
The smallest unit of a chemical compound, composed of two or more atoms bonded together
What is a MOLECULE
Electrons that are in the highest energy level of an atom of an element?
What are VALENCE ELECTRONS?
The force of attraction between molecules of the same substance so that they tend to stay together
What is COHESION?
Compounds made of only two elements (hint bi = two)
What are BINARY COMPOUNDS?
An investigation in which the factors that influence the outcome are kept the same except for one - the factor being studied.
What is a CONTROLLED EXPERIEMENT?
The ratio of a substance's mass to it's volume
what is DENSITY?
Positive particles found in the nucleus of an atom
What are PROTONS?
The force of attraction between molecules of different substances so that they tend to stick together
what is ADHESION?
A chemical reaction in which a substance reacts rapidly with oxygen, often producing heat and light
What is a COMBUSTION REACTION?