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32 Cards in this Set

  • Front
  • Back
  • 3rd side (hint)
What is the magnification of a microscope with a 10X ocular and a 40X objective?
400X - multiply the two
Is 400x high power or low power?
What is the function of the diaphragm?
To regulate the amount of light reaching the objective.
What is magnification?
The enlargement of an image.
What is resolution?
The quality of an image
When moving a slide to the left, which way will the image appear to move?
To the right.
What are the steps of the scientific method?
1) Define problem
2) Form hypothesis
3) Test hypothesis
4) Observe and measure
5) Analyse and form conclusion
6) Replicate work
7) Publish results
What is a controlled experiment?
An experiment where identical experiments are set up.
What is the control group?
The group where nothing is changed
What is the experimental group?
One variable is changed.
What is the variable?
The factor that is changed.
How do you find the number of protons?
Equal to atomic number.
How do you find the number of electrons?
Equal to protons.
How do you find the number of neutrons?
Equal to mass - number.
In a neutral atom, the number of protons always equals the number of ________.
What is the charge of a proton?
What is the charge of an electron?
What is the charge of a neutron?
What is an ion?
An atom or group of atoms with excess electrical charge.
How is a positive ion formed?
When there are less electrons.
How is a negative ion formed?
When there is one extra electron.
What is a covalent bond?
A bond formed with the sharing of electrons to make a level complete.
What is an ionic bond?
Giving off excess electrons to make two atoms' energy levels complete.
What is an element?
A substance made entirely of one kind of atom/.
What is a compound?
A substance made of 2+ kinds of atoms in different proportions.
What is a mixture?
A combination of substances that are physically mixed without forming new chemical bonds.
What is a neutralisation reaction?
The process of reacting an acid to a base to produce a neutral solution.
What is a solution?
A homogenous mixture.
What is a solute?
Something dissolved in solvent.
What is a solvent?
The substance that makes up the bulk of a solution.
What elements must be present for an element to be considered organic?
Always carbon, sometimes H,O,N.
What is a monomer?
A compound whose molecules join together to form polymers.