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Test your basic knowledge |
Praxis General Science
Start Test
Study First
Subjects
:
praxis
,
science
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Stored mechanical - Nuclear - Chemical - gravitational
Corona
Radioactive Particles
Contains ions
Types of potential energy?
2. Relates pressure & temp. and temp and volume.
The intensity of sound is measured in
Louis Pasteur
Convection
Direct Variations
3. A heat that required to change (water from liquid to solid) from one state to another.
Types of kinetic energy?
Dynamics
Double replacement Reactions
Heat latent
4. What are the # of protons in the nucleus of an atom called?
Strong electrolytes
Some Uses of electricity
Atomic number
Black
5. The amount of energy that it takes to raise one gram of water one degree celsius.
Calorie
Transition elements
When a light hits a rough surface
the mass number of an atom
6. A compound of which a relatively small amount of the dissolved solute exists as ions in an aqueous solution. Example: Acetic acid - CH3COOH (vinegar)
Grounding Charge
Chemical properties of metalliods
Convection
Weak Electrolytes
7. Experiments may not be done on...
Push & Pull
Electrochemistry
Pull of gravity
birds
8. Submarines - diving weighting system - naval architecture - Flotation - Buoyancy compensator
Weak Electrolytes
Group 1 on the periodic table are all
sulfhydryl group (Functional Group)
Applications of Archimedes principle
9. The same pathogen must be found in every person with the same disease - the pathogen must be isolated & grown in a culture - when the organism is re - introduced in an experimental animal - that animal should develop the same disease originally seen
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10. Way of keeping tract of valence electrons
Hydrophilic
Electrons
Convection
Lewis dot structures
11. 100x the base unit
Noble gasses
Metalloids
Hecto
Kinetic energy
12. Most directly involved with controlling levels of sugar in blood
Heat vaporization
Conduction
Length
Insulin
13. The amount of energy required for the liquid at its boiling point to become a gas
Static friction
Forces on objects at rest
Heat vaporization
Magnetic domains
14. Polar molecules
Non - electrolytes
On the periodic table which elements are grouped by color
Hydrophilic
Pitch
15. The Earth's seasons can be attributed primarily to which of the following in conjunction with its revolution about the Sun?
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16. Record vibrations in earth & allow us to measure earthquake activity.
Seismographs
Inside the nucleus
Current
The higher the voltage
17. Friction opposes the motion of one surface past another - Friction is common when slowing down a car or sledding down a hill.
Volume
Power
Rubbing
Avogadros hypothesis
18. The number of electrons per second that flow past a point in a circut.
Nucleus
Current
Load & switch
Heat Fusion
19. Symmetry - crystalline structures are universal - Crystallographic defects - Electrical properties - crystal system
Non - electrolytes
Isotopes
Some characteristics of crystals
Excited electrons
20. Consists of frequency (f) - measured in hertz - and wavelength measured in meters - the frequency times the wavelength of every electromagnetic wave equals the speed of light.
The electromagnetic spectrum
Conduction
electrostatics
Types of kinetic energy?
21. Alkali metals
Group 1 on the periodic table are all
Heat vaporization
The intensity of sound is measured in
Current
22. Negatively charged particles found outside the nucleus
Density
sulfhydryl group (Functional Group)
Magnetic field
Electrons
23. A temperature scale with the freezing point of water 32 degrees and the boiling point of 212 degrees.
newtons first law of motion
Deca
Fahrenheit
Heat vaporization
24. Finding that a solution conducts an electric current shows conclusively that the solution...
Eyeglasses are ____ so the image will hit the retina
Pitch
Contains ions
Forces on objects at rest
25. The interference that occurs when two waves combine to make a wave with a larger amplitude
circut types
Neutrons
The electromagnetic spectrum
Constructive interference
26. Is done on an object when an applied force moves across a distance.
Work
chemically active
Seismographs
Evaporation
27. Average mass of various isotopes of the element.
Longitudinal Waves
Carbon Dioxide
Covalent Bonds
Atomic mass
28. Current is measured with a device called...
Pasteur's postulate
Magnetic domains
Transverse Waves
Ampmeter
29. # of protons + # of neutrons
Mass number
Potential difference
Spectrophotometry
Alkali metals are
30. A wave in which the particles of the medium move perpendicularly to the direction the wave is traveling
Transverse Waves
Corona
When a light hits a rough surface
Heat latent
31. Small uncharged particles in the nucleus they are neutral
Neutrons
Heat conduction
Endothermic
Chemical properties of metalliods
32. Change from gas to liquid
Latent heat
Condensation
Radiation
Atomic mass
33. Shiny - softer & less dense. Mostly chemically active
Pitch
Alkali metals are
Kelvin
Latent heat
34. A wave in which the particles move parallel to the path of the wave
Heat is transferred in 3 ways
Longitudinal Waves
Deca
Milli
35. A buret is used to deliver solution in precisely - measured - variable volumes. deliver one reactant until the precise end point of the reaction is reached.
Composition reaction
Buret
Convection
Constructive interference
36. All processes cease when temperature approaches 0.
Phases of matter
On the periodic table which elements are grouped by color
Types of kinetic energy?
3rd law of thermodynamics
37. Resistance is measured in...
Hecto
Group 2 on the periodic table
Kelvin
OHMS
38. They are neither precise nor accurate.
electroscope
Protons
The true length of a block of wood is 1.010 cm. Three measurements of this block produced the following values: 1.4 cm - 1.2 cm - and 0.9 cm. Which of the following statements is true concerning these measurements?
Mole
39. Heat energy that is transferred into or out of a system
Heat transfer
Transverse Waves
Difference between metals & non - metals
When a light hits a rough surface
40. 1. nuclear reaction 2. radioactive
During ____ elements change into other elements change into other elements called _____ elements.
Kinetic Molecular theory
chemically active
Entropy
41. The process of heat transfer via solid contact
Forces on a moving object
Heat conduction
Inside the nucleus
Kilo
42. Is an atom that has all of its electrons in the lowest possible energy levels
Stable electron arrangement
Newtons 2nd law of motion
Magnetic field
Non - metal
43. Are small positively charged particles
Protons
newtons first law of motion
Water
Heat
44. Electrons in the outermost energy level; they are involved in bond formation
Seismographs
Halogens
Valence electrons
Latent heat
45. The property of sound that varies with variation in the frequency of vibration.
Electrophoresis
Pitch
Valence electrons
Noble gasses
46. Pushing a vacuum cleaner or pulling a bowstring applies muscular force when the muscles expand & contract elastic force occurs when an object returns to its original shape (for example - when a bow is released)
Energy
Chordates
Inside the nucleus
Push & Pull
47. The centripetal force is provided by the high banking of the curved road & by friction between the wheels & the road.
Lewis dot structures
Inertia & circular motion
Kelvin
Nuclear fission
48. Atoms of the same element that have different numbers of neutrons
Catalysts
Isotopes
Group 1 on the periodic table are all
Types of kinetic energy?
49. The difference in electrical charge between two points in a circuit expressed in volt. When an electron goes through a load it does work & loses some energy.
Centrifuge
Transition elements
Latent heat
Potential difference
50. You see your reflection
When light hits a smooth and shiny surface
Fahrenheit
true of hurricanes but not of tornadoes
Group 1 on the periodic table are all