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What are observations? How do you make them? Observations are the act of noticing and describing events/ you make observations with your five senses.

What happens to energy during chemical reactions? energy can be used to break bonds in reactions, energy is released when new bonds form in products. (endothermic= absorbs energy, exothermic= releases energy)

Organic contains? Carbon

Steps to the Scientific Method? 1.State the Problem, Form a hypothesis, plan and carry out an experiment, record the data, draw a conclusion

Differences between products and reactants in a chemical reaction? Products= elements produced a chemical reaction, Reactants= elements at enter a chemical reaction.

Know the different types of microscopes. Light microscope, transmission microscope, and electron microscope.

What is quantitative data? measures or values

What organisms need energy for. The ability to do work.

What makes a controlled experiment? Why must scientists use them? in a controlled experiment, an independent variable is the only factor that is allowed to be adjusted, with the dependent variable as the factor that the independent variable will affect.

How compounds are formed. When elements react together to form compounds their atoms join to other atoms using chemical bonds

What happens to atoms during a chemical reaction? Bonds between atoms may be broken, but also bonds between atoms can be rearranged.