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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. Causes motion
The presence of cells in the sample
Semi - conductors
Some substances have no noticeable odor because these substances
Force
2. Group 17; contains nonmetals; 7 electrons in its outermost energy level; very reactive; poor conductors of electric current; never in its uncombined form in nature; combine with most metals to form salts
Halogens
Pascal
Kinetic Friction
Non - metal
3. Number of protons
Mass
Atomic number
At the bottom of the meniscus curve
Noble gasses
4. A temperature scale with the freezing point of water 32 degrees and the boiling point of 212 degrees.
Load & switch
Nuclear fission
Fahrenheit
Exothermic
5. Is a simple device used to indicate the existence of a positive or negative charge.
Latent heat
Power
electroscope
Lewis dot structures
6. All processes cease when temperature approaches 0.
3rd law of thermodynamics
isotopes of each other
Direct Variations
Heat Fusion
7. Uses the principles of capillary action to separate substances such as plant pigments molecules of a larger size will migrate up the paper more quickly produce lines of pigment. - a process used for separating mixtures by virtue of differences in abs
Chromatography
Push & Pull
The presence of cells in the sample
Potential difference
8. A heat that required to change (water from liquid to solid) from one state to another.
Heat latent
Chemical bond
Rubbing
Physical properties of Meralliods
9. Stored mechanical - Nuclear - Chemical - gravitational
Types of potential energy?
When light hits a smooth surface
Types of Friction & Resistance
Atom
10. Reflects the light in one direction
Radiation
Bernoulli principle
When light hits a smooth surface
Straight line motion
11. ______ of an atom is equal to the # of protons plus the # of protons plus the # of neutrons
Avogadros hypothesis
Atomic mass
Mass
Chemical bond
12. Mass of the substance contained per unit of volume
Parallel Circut
sulfhydryl group (Functional Group)
When light hits a smooth surface
Density
13. 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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14. Concave
Transverse Waves
3rd law of thermodynamics
Celsius
Eyeglasses are ____ so the image will hit the retina
15. Alkali Metals are the most _____________
Specific gravity
3rd law of thermodynamics
chemically active
Centrifuge
16. Where are protons an neutrons located?
Current
Inside the nucleus
Pasteur's postulate
Nuclear reaction
17. An electric circut with a single path
Water
Group 1 on the periodic table are all
Double replacement Reactions
Series circut
18. The agent most widely and most consistently at work changing the appearance of the Earth's surface
Latent heat
Water
Chemical bond
Louis Pasteur
19. Electrons that can accept energy from outside sources and move farther away from the nucleus
Length
Alkali metals are
Excited electrons
Contains ions
20. The branch of physics that deals with static electricity - study of stationary electric charges.
electrostatics
Latent heat
Convection
Some characteristics of crystals
21. According to some scientists - the Earth's average surface temperature is rising as a result of the greenhouse effect. An increase in the atmospheric concentration of which of the following gases is considered to be primarily responsible
Current
Carbon Dioxide
Double replacement Reactions
Magnetic field
22. A gelatinous sample of material from a previously unexplored marine environment is thought to be living or to be composed of recently living material. Which of the following would most clearly confirm that the material has a biological origin?
Density
Weight
The presence of cells in the sample
Strong electrolytes
23. They form only over warm oceans
true of hurricanes but not of tornadoes
Hecto
Archimedes principle
Heat conduction
24. A wave in which the particles move parallel to the path of the wave
Atomic mass
Current
Semi - conductors
Longitudinal Waves
25. Heat transferred by direct contact
Stable electron arrangement
Forces on a moving object
Conduction
Calorie
26. 8 electrons
Length
Some characteristics of crystals
maximum number of electrons that an atom holds with one energy level
Semi - conductors
27. Reduction in pressure of a fluid resulting from the speed increase as fluids are forced to flow faster through narrow spaces
Venturi effect
Kelvin
Isotopes
Longitudinal Waves
28. Nuclear fission - Nuclear Fusion
types of nuclear reactions?
Some characteristics of crystals
Kilo
Hydrophilic
29. A nuclear reaction in which a massive nucleus splits into smaller nuclei with the simultaneous release of energy
Phases of matter
Kilo - calorie
Nuclear fission
Radiation
30. Equal volumes of gases at the same temperature and pressure contain equal numbers of particles
Avogadros hypothesis
Rubbing
Chemical bond
Potential energy
31. An isotope has a different number of...
Phases of matter
Deca
Neutrons
Compound machines
32. A functional group consisting of a sulfur atom bonded to a hydrogen atom (
Force
Centrifuge
oscilloscope
sulfhydryl group (Functional Group)
33. Submarines - diving weighting system - naval architecture - Flotation - Buoyancy compensator
Applications of Archimedes principle
3rd law of thermodynamics
Resistance
Heat Fusion
34. Non - metals - group 18 - the most non - reactive elements
When light hits a smooth surface
Noble gasses
Energy
Hydrocarbons
35. A boulder is sitting at the edge of the cliff it has which type of energy?
Mass
Potential energy
What are the 2 most common encountered forms of energy are
Chordates
36. A principle that states that for every action there is an equal reaction in the opposite direction
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37. The amount of heat it takes to change a solid to a liquid
Mass
Latent heat
Atomic number
Alkaline earth metals are
38. 1. All are solids having the appearance of metals & non - metals. 2. All are white or gray - but not shiny 3. Conduct electricity - but not as well as metals.
Some Uses of electricity
Nucleus
Some substances have no noticeable odor because these substances
Physical properties of Meralliods
39. They are neither precise nor accurate.
Some characteristics of crystals
Convection
Grounding Charge
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?
40. 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.
Buret
Chemical reactions
Physical properties of Meralliods
Compound machines
41. Is done on an object when an applied force moves across a distance.
Evaporation
An electromagnet can be made more powerful in 3 ways
Density
Work
42. The state of two or more objects or substances in thermal contact when they have reached a common temperature - EX. the affects after a hot cup of coffee meeting the desk temperature.
Thermal equilibrium
Refraction
3rd law of thermodynamics
Atomic mass
43. When force is applied to an object it moves in a straight line and adding force can make it go faster or slow down.
Straight line motion
Heat latent
Mass number
Difference between metals & non - metals
44. Higher because it has higher apparent frequency.
As the train approaches and blasts its whistle - the whistle sounds..
Direct Variations
Radioactive Particles
oscilloscope
45. The principle of conservation of energy: Energy can be transferred and transformed - but it cannot be created or destroyed.
First law of thermodynamics
Specific gravity
Transverse Waves
Atomic mass
46. Lacking affinity for water. Repels water. Non - polar
Non - electrolytes
Boron
Non - metal
Hydrophobic
47. A wave in which the particles of the medium move perpendicularly to the direction the wave is traveling
Halogens
Kilo - calorie
Avogadros hypothesis
Transverse Waves
48. You see your reflection
When light hits a smooth and shiny surface
Mass
Doppler effect
What are the 2 most common encountered forms of energy are
49. Most directly involved with controlling levels of sugar in blood
Direct Variations
Avogadros hypothesis
Insulin
alloy
50. 1/10 the base unit
Water
electroscope
Fahrenheit
Deci