Scientific Investigation
Name 4 steps to thinking like a scientist
Observation, Inference, Prediction, Conclusion
Two types of data
Qualitative and Quantitative
Units for measuring length
Millimeters, meters, etc.
nucleus
Parts of an atom
protons, nuetrons, and electrons
What are the 7 steps of the scientific method?
State the problem
Gather Information
Form a Hypothesis
Perform an experiment
Analyze the Data
Draw a conclusion
Share the Results & repeat
What are three ways you can display your data?
Pie chart, bar graph, line graph
Units for measuring mass
grams, etc
A chart of known elements organized by their atomic number
Periodic Table of Elements
Negatively charged particles
electrons
What is being tested
Independent variable
A description that doesn't include numbers
Anything that has mass and takes up space
volume
Two or more atoms joined together chemically
molecule
What is being measured
Dependent variable
A description that involves numbers in the form of an amount or measurement
Quantitative
What is the difference between a mixture and a solution
a mixture is a combination of two or more substances that do not lose their identifying characteristics
a solution is a mixture in which one substance dissolves in another
A substance formed by atoms from two or more elements
compound
Hypothesis
Two types of changes
chemical and physical