Module 1/2
A logical conclusion drawn from observations, previous knowledge, and available information.
What is inference?
The charge of a neutron.
What is neutral?
The force of attraction between molecules of the same substance so that they tend to stay together.
What is cohesion?
All of these types of reactions have oxygen as one of the reactants.
What are combustions reactions?
A point against which motion is measured
What is a reference point.
Observing bubbles in a jar / noting the color of the red ball is this kind of observation.
What is Qualitative?
Determines the Atomic number of an element.
What is the number of protons?
A force of attraction between atoms or a group of atoms due to the sharing or transferring of electrons
What is a Chemical bond?
Compounds made of only 2 elements
What are binary compounds?
The distance an object travels plus the direction from the starting point.
What is displacement?
A good hypothesis should be this.
The Law that states that matter cannot be created or destroyed.
Bonds that occur when 2 nonmetal atoms share a valence electron
What is covalent?
Chemical reaction that releases energy to its surroundings.
What is an exothermic reaction?
A force that opposes motion, resulting when surfaces or objects rub against each other
What is friction?
This is a pure substance that cannot be broken down into a similar substance and contains only one type of atom.
What is an element?
The number of energy levels in an atom.
What is 3?
An atom or a group of atoms that has a positive or negative change
What is an ion?
Chemical reaction in which a compound breaks down into 2 or simpler substances.
What is a decomposition reaction?
Four forms of friction.
What are static, kinetic, rolling and fluid?
The smallest chemical unit of an element
What is an atom?
Electrons that are in the highest energy level (the energy level farthest from the nucleus) of an atom of an element.
What are valence electrons?
The bond when 2 atoms have an unequal pull on the electrons they share.
What is polar?
Chemists use these to count atoms, ions, or molecules.
What are moles?
The tendency of an object to resist changes in its velocity
What is inertia?