Scientific Method
Name any equipment you can use for a scientific experiment?
Literally ANYTHING!
Beaker, scissors, paper, test tubes, pencil, notebook, water, bottle etc.
Which axis is the y-axis for plotting a graph?
a. Horizontal (Side to side)
b. Vertical (Up, Down)
B. Vertical
Describe the position and mass of proton?
Position = Nucleus
Mass = 1 amu
What is a proton?
A sub-particle of an atom that has a postive charge found in the nucleus
What is independent variable?
Manipulated variable, variable you can change, variable that affects the independent
What is a hypothesis?
An educated guess or what you think the possible answer is
Conclusion
Describe the position and charge of neutron.
Position = Nucleus
Charge = 0 / Uncharged / Neutral
What are the three particles that makes up an atom?
Proton, Neutron, Electron
What is the 'variable' you need to keep consistent throughout the experiment to ensure a fair result?
Control Variable
What are important features of writing a proper method or procedure in a lab report?
Use past tense, list proper steps
Which 'variable' goes on the y-axis and x-axis?
- Dependent and Independent?
X axis = Independent
Y axis = Dependent
Describe the position and charge of electron.
Position = Shell
Charge = Negative
Define "atomic number" or "atomic weight."
Equals to the number of protons in the nucleus of an atom
Students build paper bridges using different numbers of paper layers and test how much weight they can hold.
What is the "dependent" variable?
weight the paper bridges can hold
You have two bean plants. One is kept in full sunlight, and the other is kept in a dark cupboard.
State a "hypothesis"
Possible answers of what can happen to the bean plants in the sunlight or cupboard. E.g. It will die in the dark cupboard but survive in the sunlight
Which axis is the y-axis for plotting a graph?
a. Horizontal (Side to side)
b. Vertical (Up, Down)
B. Vertical
Is this carbon element neutral or not? Explain your answer?
Carbon = 6 protons, 6 electrons, 6 neutrons
Yes, it is neutral. It has equal number of electrons and protons. It has no charge therefore, it is a neutral atom.
In an oxygen atom, it has an atomic mass of 16 and 8 electron. Calculate the number of protons.
Oxygen = 8 atomic number = 8 protons
Students measure their heart rate after walking, jogging, and running.
What is the independent variable?
Walking, jogging, running
You have three ice blocks. One is placed in the sun, one in the shade, and one in the fridge. State the "aim"
To investigate/find out/experiment what happens to the ice blocks when placed in the sun, shade and fridge. (Similar)
You placed small pieces of butter on: a metal spoon, a wooden spoon, and plastic spoon. Then you put each spoon in warm water.
State a "hypothesis"
Any possible answers of what happens to the butter when put in the water. For example, butter in metal spoon will float when put in the water while butter in wooden spoon stick to the spoon instead of the water.
Describe how elements are arranged in the periodic table.
They are arranged in their "atomic weight" or "atomic number." They are also arranged in groups or families of similar chemical properties like gases and alkali earth or metals.
In a chlorine atom, it has an atomic mass of 35 and 17 protons. Calculate the number of neutrons in chlorine.
Mass 35 - 17 Protons = 18 Neutrons
Students drop balls made of different materials from the same height to compare how high they bounce.
Independent variable:
Dependent variable:
Control variable:
Independent: balls made of different materials
Dependent: bouncing height or how high it bounces
Control: drop from the same height