Scientific Investigation
Matter
Chemical Reaction
Molecules to Organisms
Mystery!
100
On a graph, what axis does the independent variable go?
X-axis
100
Which part of an atom has a negative charge?
Electron
100
A new substance is made during a physical change or a chemical change?
Chemical change
100
What is the process when plants make sugar?
Photosynthesis
100
Which part of an atom is positively charged?
Proton
200
On a graph, what axis does the dependent variable go?
Y-axis
200
What are the two regions of an atom?
Electron Cloud and nucleus
200
Blending a smoothie- is this an example of a physical change or a chemical change?
Physical change
200
What is the process when cells take sugar to make energy?
Cellular respiration
200
Which part of an atom has a neutral charge?
Neutron
300
Time you go to sleep, amount of water you give a plant, shoes used to run the mile- are these examples of an independent variable or dependent variable?
independent variable
300
A popsicle is left outside on a hot day. Which phase change is most likely to occur?
Melting
300
According to the Law of Conservation of mass, if the reactants have 5 atoms total, how many atoms total are in the products?
5 atoms
300
What type of organisms do cellular respiration?
All organisms
300
Baking a cake- is this an example of a physical change or a chemical change?
Chemical change
400
You place a plant under a UVB light and measure how much it grows over the next month. What is our dependent variable?
How much the plant grows over the next month.
400
What are the three particles that make up an atom?
Electrons, protons, and neutrons
400
What happens to the bonds between atoms during a chemical reaction?
bonds are broken and rearranged
400
In what ways are plants and animals dependent on one another?
Photosynthesis and cellular respiration are interconnected because the molecules cycle. Reactants of one are products of the other.
400
What are the 4 clues scientists look out for to tell if a chemical reaction has occurred?
Bubbling, Temperature Change, Color Change, Formation of a precipitate
500
What does the acronym SULTAN stand for when it comes to graphing?
Scale
Units
Labels
Title
Accuracy
Neatness
500
What is the particle arrangement of a solid, liquid, and gas (how are they organized)?
Solid- Tightly packed and vibrate
Liquid- Close and slide past one another
Gas- far apart and in all directions
500
According to the Law of Conservation of mass, when is mass conserved?
When the mass of the reactants equal the mass of the products.
500
What are the starting materials for cellular respiration? Ending materials?
Start: Glucose (sugar) and oxygen
End: CO2 and H2O
500
Water begins to form on the outside of a cold cup with ice water. Which phase change has occurred?
Condensation