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Test your basic knowledge |
Praxis General Science
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Subjects
:
praxis
,
science
Instructions:
Answer 50 questions in 15 minutes.
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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. F - branch of chemistry that deals with the chemical action of electricity and the production of electricity by chemical reactions
Electrochemistry
Heat Fusion
Applications of Archimedes principle
types of particles in the nucleus?
2. Heat energy that is transferred into or out of a system
Electrochemistry
Magnetic domains
Mass
Heat transfer
3. Static friction - Kinetic friction - Push & pull - rubbing - pull of gravity - forces on objects at rest - forces on a moving object - inertia & circular motion.
Types of Friction & Resistance
Law of momentum conservation
Atomic number
Electrochemistry
4. Is done on an object when an applied force moves across a distance.
2nd law of thermodynamics
Work
The higher the voltage
Dynamics
5. Higher because it has higher apparent frequency.
Composition reaction
As the train approaches and blasts its whistle - the whistle sounds..
Halogens
Types of Friction & Resistance
6. The amount of heat it takes to change a solid to a liquid
Archimedes principle
Latent heat
Atomic number
Boyles law states
7. The volume of a gas is directly proportional to the temperature of a gas
Non - metals
potential energy
Kinetic Friction
Charles law
8. (of a chemical reaction or compound) occurring or formed with absorption of heat. Absorbs energy from its surroundings.
Silicon
Endothermic
Lewis dot structures
Fahrenheit
9. Not as easy to recognize as metal bc they do not always share physical properties. They are dull - brittle - & not good conductors of heat
Series circut
Weak Electrolytes
Non - metal
Mass
10. 1. Liquid crystals - when certain solids melt their crystal lattices disintegrate & their particles lose their 3- dimensional pattern. 2. Solid - as a liquid substance cools & forms a solid. The strong attractive forces between oppositely charges ion
Centrifuge
Series circut
Crystals is a regular repeating Arrangement of atoms - ions - or molecules. They are well Organized structures. The 2 kinds of structures are:
The intensity of sound is measured in
11. Electrons in the outermost energy level; they are involved in bond formation
Radioactive Particles
Louis Pasteur
Valence electrons
Potential energy
12. Measure of the earth's pull
Chromatography
OHMS law
Laws of thermodynamic / Laws of conservation
Weight
13. They are neither precise nor accurate.
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?
Stable electron arrangement
Ions are
Density
14. Nuclear fission - Nuclear Fusion
Pitch
types of nuclear reactions?
Heat conduction
A converging lens produces a real image when
15. Parts of 2 compounds replace each other. Ex. Switch partners AX + BY -> AY + BX
Entropy
Potential difference
Double replacement Reactions
Non - metals
16. A circut with two or more resistors where the electricity has more than one path to travel
Types of Friction & Resistance
Applications of Archimedes principle
conducted more easily
Parallel Circut
17. Specific gravity is the ratio based on...
Archimedes principle
Refraction
Density
An electromagnet can be made more powerful in 3 ways
18. Heat transferred by direct contact
Composition reaction
Conduction
Ampmeter
Isotopes
19. Experiments may not be done on...
Inertia & circular motion
Current
birds
Non - electrolytes
20. (physics) the capacity of a physical system to do work - or supply heat.
Rubbing
Difference between metals & non - metals
types of nuclear reactions?
Energy
21. # of electrons. Non - metals have 4-8 electrons in their outermost energy.
Difference between metals & non - metals
Forces on a moving object
Group 1 on the periodic table are all
Carbonyl Group (Functional Group)
22. What are the # of protons in the nucleus of an atom called?
Pascal
OHMS law
Atomic number
Radiation
23. Measures the amount of matter in an object
Load & switch
Mass
Mass number
Neutrons
24. A material such as glass or porcelain with negligible electrical or thermal conductivity. Electric charges do not move easily - if at all.
Kinetic energy
Straight line motion
Insulator
Decomposition reaction
25. A free element replaces an element that is a part of a compound. Ex. A +BX -> AX + B
Single replacement reaction
Circut
2nd law of thermodynamics
circut types
26. Change from gas to liquid
Black
Non - electrolytes
Milli
Condensation
27. 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
Radiation
Newton's 3rd law motion
Carbon Dioxide
Bernoulli principle
28. Gram is the base unit of...
Endothermic
Contains ions
Mass
Inertia & circular motion
29. Concave
Boron
Covalent Bonds
Longitudinal Waves
Eyeglasses are ____ so the image will hit the retina
30. A wave in which the particles move parallel to the path of the wave
Longitudinal Waves
Nuclear reaction
Some substances have no noticeable odor because these substances
Electrophoresis
31. Several vehicles - initially at a complete stop - begin a long race at the same starting point. The vehicle that has a constant value for which of the following is most likely to win?
Group 2 on the periodic table
Inside the nucleus
Mass
Linear acceleration
32. Shiny - softer & less dense. Mostly chemically active
Alkali metals are
Volume
Types of Friction & Resistance
electroscope
33. Resistance is measured in...
Buret
circut types
Magnetic field
OHMS
34. Uses the transfer of heat from one substance to another to determine the specific heat of the substance.
As the train approaches and blasts its whistle - the whistle sounds..
Nucleus
isotopes of each other
Calorimeter
35. 1. nuclear reaction 2. radioactive
Calorimeter
Hydrophobic
electrostatics
During ____ elements change into other elements change into other elements called _____ elements.
36. Mass & weight are not the ____ quality
same
Heat latent
As the train approaches and blasts its whistle - the whistle sounds..
Laws of thermodynamic / Laws of conservation
37. The object is further than one focal length from the lens
Neutrons
conducted more easily
sulfhydryl group (Functional Group)
A converging lens produces a real image when
38. 10x the base unit
Deca
Buret
Pitch
electroscope
39. Submarines - diving weighting system - naval architecture - Flotation - Buoyancy compensator
At the bottom of the meniscus curve
Applications of Archimedes principle
types of particles in the nucleus?
Hydrocarbons
40. Is the work done divided by the amount of the time it took to do it. P= w/t
When a light hits a rough surface
Power
Heat Fusion
Thermal contact
41. 'An object at rest will remain at rest - and an object moving at a constant velocity will continue moving at a constant velocity - unless it is acted upon by an unbalanced force.' Another name is Law of Inertia
newtons first law of motion
Kilo - calorie
Boyles law states
Radiation
42. Have properties in between metals and non - metals found in groups 13-16
Isotopes
Milli
The tilt of the Earth's axis of rotation relative to the ecliptic
Metalloids
43. Is the study of the relationship between motion & the forces affecting motion.
Magnetic domains
Power
When a light hits a rough surface
Dynamics
44. ______ of an atom is equal to the # of protons plus the # of protons plus the # of neutrons
Atomic mass
Potential difference
Valence electrons
Latent heat
45. 1. Like charges repel one another - 2. Opposite charges attract each other - 3. charge is considered a neutral object has no net charge.
alloy
Mass number
Electricity charged objects share these characteristics (3)
Calorie
46. A compound of which a relatively small amount of the dissolved solute exists as ions in an aqueous solution. Example: Acetic acid - CH3COOH (vinegar)
Weak Electrolytes
Pitch
Stable electron arrangement
Convection
47. Relates pressure & temp. and temp and volume.
Work
Bernoulli principle
Direct Variations
Entropy
48. Solid has a definite shape and volume - Liquid has definite volume - but no shape - Gas has no shape of volume.
OHMS law
Phases of matter
Calorimeter
Heat
49. Transfer of thermal energy with in a fluid. The particles in a fluid transfer the thermal energy from hot areas to cooler areas EX. the warmed up rising air from a heat source such as a fire or electric heater.
OHMS law
Contains ions
Conduction
Convection
50. 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.
Venturi effect
Excited electrons
Direct Variations
Potential difference
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