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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. 10x the base unit
Excited electrons
The presence of cells in the sample
Work
Deca
2. The total entropy of a system plus that of its surroundings always increase.
2nd law of thermodynamics
Latent heat
Mass
Specific gravity
3. Temporary magnets that lose their magnetism when electric current is removed
Kilo
Electromagnets
electroscope
Silicon
4. F - branch of chemistry that deals with the chemical action of electricity and the production of electricity by chemical reactions
Specific gravity
Group 2 on the periodic table
Electrochemistry
Noble gasses
5. Record vibrations in earth & allow us to measure earthquake activity.
Halogens
Seismographs
Newtons 2nd law of motion
same
6. The more energy the electrons have
The higher the voltage
circut types
Pasteur's postulate
Parallel Circut
7. (physics and chemistry) the smallest component of an element having the chemical properties of the element
Length
Atom
Transition elements
Nuclear energy
8. (physics) a process that alters the energy or structure or composition of atomic nuclei - When a reaction involves the nucleus - elements become different thus is called a nuclear reaction.
Mass
Constructive interference
Nuclear reaction
Radioactive Particles
9. 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
Magnetic field
Volume
Chromatography
Eyeglasses are ____ so the image will hit the retina
10. The volume of a gas is directly proportional to the temperature of a gas
Charles law
Resistance
Mass
Heat conduction
11. 1. Constructive 2. Destructive
Two types of wave interference are (sound related)
Newton's 3rd law motion
Forces on a moving object
Black
12. The speed of light changes in different materials this is due to__
electroscope
Nuclear Fusion
Refraction
Decomposition reaction
13. Series circut - Parallel circut
Power
Chemical bond
Semi - conductors
circut types
14. Equal volumes of gases at the same temperature and pressure contain equal numbers of particles
Avogadros hypothesis
Weight
potential energy
Convection
15. 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.
Physical properties of Meralliods
Carbon Dioxide
Ampmeter
Atom
16. All processes cease when temperature approaches 0.
3rd law of thermodynamics
same
Nuclear fission
electrostatics
17. 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
Newtons 2nd law of motion
Carbon Dioxide
Noble gasses
conducted more easily
18. They form only over warm oceans
true of hurricanes but not of tornadoes
Venturi effect
Heat
Pascal
19. Removal of static electricity by conduction
Grounding Charge
Inside the nucleus
Force
At the bottom of the meniscus curve
20. Objects are in thermal contact if they can affect each others temperature
What are the 2 most common encountered forms of energy are
The electromagnetic spectrum
Nucleus
Thermal contact
21. Parts of 2 compounds replace each other. Ex. Switch partners AX + BY -> AY + BX
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?
Double replacement Reactions
Phosphate group
Ionic Bonds
22. 1. Have some characteristics of metals & non - metals. 2. Properties do not follow patterns like metals & non - metals.
Magnetic field
Chemical properties of metalliods
Chemical bond
Nuclear fission
23. 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?
The presence of cells in the sample
types of particles in the nucleus?
Pascal
Electrons
24. Most directly involved with controlling levels of sugar in blood
Avogadros hypothesis
Heat is transferred in 3 ways
Fahrenheit
Insulin
25. Higher because it has higher apparent frequency.
Seismographs
On the periodic table which elements are grouped by color
Boron
As the train approaches and blasts its whistle - the whistle sounds..
26. States that when 2 objects collide in an isolated system the total momentum of 2 objects after the collision. That is the momentum gained by object.
Law of momentum conservation
Nuclear reaction
Milli
The intensity of sound is measured in
27. Is the transfer of energy by waves such as the electromagnetic waves emitted by stars the sun warms the earth by emitting radiant energy.
Archimedes principle
Radiation
Resistance
Potential energy
28. When you step out of the shower the floor feels colder on your feet than the bathmat. Because heat is ______________ to the floor.
Magnetic domains
Density
Ions are
conducted more easily
29. Harder - denser - have higher melting points & are chemically active.
As the train approaches and blasts its whistle - the whistle sounds..
birds
Atomic mass
Alkaline earth metals are
30. You see your reflection
When light hits a smooth and shiny surface
Nuclear Fusion
Kinetic energy
Heat is transferred in 3 ways
31. Small uncharged particles in the nucleus they are neutral
First law of thermodynamics
Grounding Charge
Neutrons
Hydrocarbons
32. A temperature scale with the freezing point of water 32 degrees and the boiling point of 212 degrees.
Carbon Dioxide
Refraction
Exothermic
Fahrenheit
33. A functional group consisting of a phosphorus atom covalently bonded to four oxygen atoms. Ideal for energy transfer reactions (ATP).
Circut
Heat latent
Phosphate group
Atomic number
34. Solid has a definite shape and volume - Liquid has definite volume - but no shape - Gas has no shape of volume.
The electromagnetic spectrum
Resistance
electroscope
Phases of matter
35. The branch of physics that deals with static electricity - study of stationary electric charges.
Group 1 on the periodic table are all
electrostatics
types of nuclear reactions?
Forces on objects at rest
36. The monovalent group - OH in such compounds as bases and some acids and alcohols. Makes the molecule polar which increases the solubility of a compound.
Inside the nucleus
Group 2 on the periodic table
Archimedes principle
Hydroxyl group ( Functional group)
37. A wave in which the particles move parallel to the path of the wave
Hydroxyl group ( Functional group)
Celsius
Longitudinal Waves
chemically active
38. An electric circut with a single path
Covalent Bonds
Kinetic Molecular theory
Linear acceleration
Series circut
39. Measure of the earth's pull
Chemical bond
types of particles in the nucleus?
Destructive interference
Weight
40. A Compound breaks down into 2 or more simpler substances EX. AB -> A+B
Boyles law states
Decomposition reaction
What are the 2 most common encountered forms of energy are
conducted more easily
41. Elements in the middle of the periodic table - in groups 3-12.
Ions are
Transition elements
Centrifuge
Hydrophobic
42. That for a fixed amount of gas at a constant temperature - the volume of a gas increases as its pressure decreases
Mass number
Deci
Heat
Boyles law states
43. The amount of energy required for the liquid at its boiling point to become a gas
During ____ elements change into other elements change into other elements called _____ elements.
When a light hits a rough surface
Heat vaporization
Atomic mass
44. A mixture containing two or more metallic elements or metallic and nonmetallic elements usually fused together or dissolving into each other when molten Ex. Brass is an alloy of zinc and copper
circut types
Mass
Protons
alloy
45. Is an atom that has all of its electrons in the lowest possible energy levels
Endothermic
Transverse Waves
chemically active
Stable electron arrangement
46. A piece of paper that appears blue in sunlight is illuminated solely by a red light that is passed through a green filter. What color does the paper appear under this illumination?
Bernoulli principle
Deca
Black
Pascal
47. When measuring the volume of water in a graduated cylinder where does one read the measurement?
At the bottom of the meniscus curve
Carbonyl Group (Functional Group)
Compound machines
Entropy
48. The property of sound that varies with variation in the frequency of vibration.
Static friction
true of hurricanes but not of tornadoes
Catalysts
Pitch
49. A boulder is sitting at the edge of the cliff it has which type of energy?
Neutrons
Silicon
Compound machines
Potential energy
50. Meter is the base unit of...
Length
Venturi effect
Difference between metals & non - metals
At the bottom of the meniscus curve