A logical interpretation based on observations or prior knowledge
What is an inference?
100
Parts of an atom located in the nucleus
What are protons & neutrons?
100
Determines the placement of elements on the periodic table
What is the atomic number?
100
A chemical reaction that releases energy in the form of heat
What is an exothermic reaction?
100
Forces that cause an object to start moving, stop moving, or change direction
What are unbalanced forces?
200
Involves using one or more of the five senses to gather information
What is an observation?
200
Parts of an atom that are in orbit around the nucleus
What are electrons?
200
The elements located on the stair-step line of the periodic table that have properties of both metals and non-metals
What is a metalloid?
200
Type of chemical reaction that combines two or more substances to make a more complex substance
What is a synthesis reaction?
200
The rate at which the velocity of an object changes
What is acceleration?
300
The variable that is changed in an experiment (the test)
What is the independent variable (manipulated variable)?
300
An atom that has lost or gained electrons and has an electrical charge
What is an ion?
300
Another name for the rows on the periodic table
What are periods?
300
Type of chemical reaction that breaks down compounds into simpler substances
What is a decomposition reaction?
300
States that an object in motion will stay in motion, & an object at rest will stay at rest, unless acted on by an outside force
What is Newton's First Law of Motion?
400
The variable that is expected to change in response to the manipulated variable (the results of the test, or what is measured during the experiment)
What is the dependent variable (responding variable)?
400
Different forms of an element whose atoms have the same number of protons & electrons, but have a different number of neutrons
What is an isotope?
400
Another name for the columns on the periodic table
What are groups (or "families")?
400
Type of chemical reaction where one element replaces another in a compound, or when two elements in different compounds trade places
What is a replacement reaction?
400
Tells how much energy is needed to raise a substance's temperature by a given amount (energy needed to raise 1kg of the substance by 1degree Kelvin)
What is specific heat?
500
The comparison or "normal' group in an experiment that is not actually tested
What is the control?
500
The electrons in the outer energy level of an atom that are able to form chemical bonds
What are valence electrons?
500
The person who noticed that patterns appeared when the elements were arranged in order of one particular physical property - increasing atomic mass
Who was Dimitri Mendeleev?
500
States that the amount of matter involved in a chemical reaction does not change. The total mass of the reactants must equal the total mass of the products.
What is the Law of Conservation of Mass?
500
Thermal energy moving from an object at one temperature to an object at a different temperature