Science & Engineering Practices
Data or information gathered using your senses about a situation.
What is an observation?
A tool that measures precises liquid volume in mL.
What is a graduated cylinder?
When a substance changes from a liquid to a solid.
What is freezing?
The whole number that is unique to each element, organizes the periodic table in ascending order, and is equivalent to the number of protons and electrons.
What is Atomic Number?
The substance that gets dissolved in a solution.
What is the solute?
The part of a controlled experiment that is manipulated by the experimenter.
What is the independent variable?
The metric unit for distance.
What is meters (m)?
When a substance has a density greater than 1 g/mL.
What is sinking?
The number, usually a decimal, on the periodic table that describes the number of protons and neutrons in one atom of an element.
What is Atomic Mass?
Two actions that can be taken to increase the rate of a reaction.
What are increase stirring and increase temperature?
The conditions that have to remain the same during an experiment to ensure accuracy and reliability of results.
What is the controls/constants?
The metric base unit for measuring mass?
What are grams? (g)
The temperature at which a substance turns from a liquid to a gas.
What is boiling point?
When a chemical reaction takes place in a container that is not sealed and this allows for air or other substances to enter or exit the system.
What is an open system?
The substance that something dissolves into in a solution.
What is the solvent?
When the evidence collected about something does not support the claim.
What is refuting a claim?
Metric unit for density.
What is g/mL or g/cm3?
A method for separating a dissolved substance from a liquid.
What is evaporation?
What is evidence of a chemical reaction occuring?
When reactants break down into two or more products.
What is a decomposition reaction?
The scientific rule or principle that explains how or why evidence supports a claim.
What is reasoning?
If a small rock was dropped into graduated cylinder with 50 mL of water in it and the water level rose to 65 mL, what is the volume of the rock?
The ability of a substance to be dissolved in 100 grams of water at a certain temperature.
What is solubility?
If there are 50 grams of baking soda combining with 100 grams of vinegar, how many grams of total products would there be left after the reaction took place?
150 grams (law of conservation of mass)
When two or more simple substances react to form a more complex product.
What is a synthesis reaction?