SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
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. The number of electrons per second that flow past a point in a circut.
Length
Current
Destructive interference
Circut
2. 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.
maximum number of electrons that an atom holds with one energy level
Electrochemistry
Thermal equilibrium
Heat conduction
3. Discovered in the late 1800s that micro organisms play a casual role in onset of a disease
Heat
Louis Pasteur
Endothermic
Chemical reactions
4. Organic molecules that are composed of only carbon and hydrogen.
Hydrocarbons
Constructive interference
types of particles in the nucleus?
Catalysts
5. 8 electrons
Excited electrons
Condensation
maximum number of electrons that an atom holds with one energy level
Thermal contact
6. A nuclear reaction in which a massive nucleus splits into smaller nuclei with the simultaneous release of energy
During ____ elements change into other elements change into other elements called _____ elements.
Some characteristics of crystals
electroscope
Nuclear fission
7. 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.
Refraction
Kinetic Molecular theory
Law of momentum conservation
Conduction
8. Compounds that speed up chemical reactions. Sometimes without Catalysts reactions cant occur.
Refraction
Parallel Circut
Catalysts
Alkali metals are
9. Uses sound waves to locate objects and is especially useful underwater the sound waves bounce off the object and are used to assist in location
Boyles law states
Newtons 2nd law of motion
Some characteristics of crystals
Sonar technology
10. Inclined plane - lever - wheel & axle - pulley.
When a light hits a rough surface
Hydrocarbons
Simple machines
Force
11. Describes the force of friction of 2 surfaces that are in contact but do not have any motion relative to eachother.
Single replacement reaction
Valence electrons
Static friction
Some Uses of electricity
12. Mass of the substance contained per unit of volume
Density
Length
Catalysts
Types of kinetic energy?
13. A circut with two or more resistors where the electricity has more than one path to travel
Evaporation
When a light hits a rough surface
Difference between metals & non - metals
Parallel Circut
14. Decibels
Kinetic energy
Single replacement reaction
The intensity of sound is measured in
Thermal contact
15. Removal of static electricity by conduction
Grounding Charge
The presence of cells in the sample
Chromatography
Convection
16. The force of attraction between two objects. Gravity exists not only on earth - but also between planets as well as in black wholes
Charles law
Ionic Bonds
Pull of gravity
Conduction
17. The principle of conservation of energy: Energy can be transferred and transformed - but it cannot be created or destroyed.
Hydroxyl group ( Functional group)
64.0 grams
First law of thermodynamics
Magnetic field
18. The agent most widely and most consistently at work changing the appearance of the Earth's surface
Semi - conductors
Water
Spectrophotometry
circut types
19. When measuring the volume of water in a graduated cylinder where does one read the measurement?
Eyeglasses are ____ so the image will hit the retina
Silicon
At the bottom of the meniscus curve
An electromagnet can be made more powerful in 3 ways
20. Elements in the middle of the periodic table - in groups 3-12.
Some characteristics of crystals
The higher the voltage
Transition elements
the mass number of an atom
21. A temperature scale with the freezing point of water 32 degrees and the boiling point of 212 degrees.
Dynamics
Direct Variations
Nuclear fission
Fahrenheit
22. Reduction in pressure of a fluid resulting from the speed increase as fluids are forced to flow faster through narrow spaces
Pasteur's postulate
Heat
Forces on a moving object
Venturi effect
23. 1. Have some characteristics of metals & non - metals. 2. Properties do not follow patterns like metals & non - metals.
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?
Electrochemistry
Chemical properties of metalliods
A converging lens produces a real image when
24. Heat absorbed or radiated during a change of phase at a constant temperature and pressure - the amount of heat required to undergo a phase change
Alkaline earth metals are
Latent heat
An electromagnet can be made more powerful in 3 ways
What are the 2 most common encountered forms of energy are
25. Heat energy that is transferred into or out of a system
Heat transfer
Pitch
Mass
Hydrophobic
26. The process of heat transfer via solid contact
Newtons 2nd law of motion
Covalent Bonds
Heat conduction
Resistance
27. Mass & weight are not the ____ quality
Hydroxyl group ( Functional group)
Calorimeter
Transition elements
same
28. The amount of energy required to change a substance from the solid phase to the liquid phase at its melting point
Radioactive Particles
Some substances have no noticeable odor because these substances
birds
Heat Fusion
29. Number of protons
Kinetic Friction
Atomic number
Calorimeter
Electrochemistry
30. The amount of energy that it takes to raise one gram of water one degree celsius.
Alkaline earth metals are
Calorie
Mass
Strong electrolytes
31. 10x the base unit
Hecto
Density
Deca
Heat
32. 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
Single replacement reaction
Carbon Dioxide
Types of Friction & Resistance
Power
33. Liter is the base unit of...
Circut
Volume
Contains ions
Condensation
34. Clustered regions of aligned magnetic atoms. When these regions are aligned with one another - the substance containing them is a magnet.
Current
same
Magnetic domains
Noble gasses
35. Making and breaking of chemical bonds between atoms bonds involve only the outer electrons & do not effect the nucleus
Conduction
Chemical reactions
Grounding Charge
Two types of wave interference are (sound related)
36. A functional group consisting of a sulfur atom bonded to a hydrogen atom (
Hydrophilic
Silicon
sulfhydryl group (Functional Group)
Longitudinal Waves
37. 1/1000 the base unit
Length
Milli
Valence electrons
Eyeglasses are ____ so the image will hit the retina
38. The acceleration of an object depends on the mass of the object and the amount of force applied.
Insulin
Non - metals
Newtons 2nd law of motion
Mole
39. (physics) the capacity of a physical system to do work - or supply heat.
Energy
Avogadros hypothesis
Spectrophotometry
3rd law of thermodynamics
40. Energy is added to a system one of two things must happen either thermal energy must increase or work must be done.
Specific gravity
Transverse Waves
Laws of thermodynamic / Laws of conservation
Crystals is a regular repeating Arrangement of atoms - ions - or molecules. They are well Organized structures. The 2 kinds of structures are:
41. The centripetal force is provided by the high banking of the curved road & by friction between the wheels & the road.
OHMS
Mole
Inertia & circular motion
On the periodic table which elements are grouped by color
42. Finding that a solution conducts an electric current shows conclusively that the solution...
Contains ions
Non - metals
Endothermic
Eyeglasses are ____ so the image will hit the retina
43. Metric unit for measuring temperature; On this scale water freezes at zero and boils at 100.
Magnetic field
Weight
Celsius
Exothermic
44. Is the path along which electrons flow
What are the 2 most common encountered forms of energy are
Circut
birds
Calorie
45. Average mass of various isotopes of the element.
Chromatography
Atomic mass
Kilo
Venturi effect
46. It is second element in group 14 - semi - conductor. Sand is made of silicon - it is also used to manufacture glass and cement.
Density
When light hits a smooth and shiny surface
The electromagnetic spectrum
Silicon
47. Negatively charged particles found outside the nucleus
Kinetic energy
Pascal
Chemical properties of metalliods
Electrons
48. Way of keeping tract of valence electrons
Heat Fusion
Kilo - calorie
Hecto
Lewis dot structures
49. Solids - gasses - and 1 liquid (Bromine)
Parallel Circut
Non - metals
Kinetic Friction
Entropy
50. The speed of light changes in different materials this is due to__
Convection
Electricity charged objects share these characteristics (3)
Refraction
Phosphate group
Sorry!:) No result found.
Can you answer 50 questions in 15 minutes?
Let me suggest you:
Browse all subjects
Browse all tests
Most popular tests
Major Subjects
Tests & Exams
AP
CLEP
DSST
GRE
SAT
GMAT
Certifications
CISSP go to https://www.isc2.org/
PMP
ITIL
RHCE
MCTS
More...
IT Skills
Android Programming
Data Modeling
Objective C Programming
Basic Python Programming
Adobe Illustrator
More...
Business Skills
Advertising Techniques
Business Accounting Basics
Business Strategy
Human Resource Management
Marketing Basics
More...
Soft Skills
Body Language
People Skills
Public Speaking
Persuasion
Job Hunting And Resumes
More...
Vocabulary
GRE Vocab
SAT Vocab
TOEFL Essential Vocab
Basic English Words For All
Global Words You Should Know
Business English
More...
Languages
AP German Vocab
AP Latin Vocab
SAT Subject Test: French
Italian Survival
Norwegian Survival
More...
Engineering
Audio Engineering
Computer Science Engineering
Aerospace Engineering
Chemical Engineering
Structural Engineering
More...
Health Sciences
Basic Nursing Skills
Health Science Language Fundamentals
Veterinary Technology Medical Language
Cardiology
Clinical Surgery
More...
English
Grammar Fundamentals
Literary And Rhetorical Vocab
Elements Of Style Vocab
Introduction To English Major
Complete Advanced Sentences
Literature
Homonyms
More...
Math
Algebra Formulas
Basic Arithmetic: Measurements
Metric Conversions
Geometric Properties
Important Math Facts
Number Sense Vocab
Business Math
More...
Other Major Subjects
Science
Economics
History
Law
Performing-arts
Cooking
Logic & Reasoning
Trivia
Browse all subjects
Browse all tests
Most popular tests