Cupric Sulfate reagent fine crystal - 125g
Cupric sulfate (copper(II) sulfate) reagent fine crystals are widely used in classrooms for chemistry experiments and demonstrations, primarily due to their distinct blue color and diverse chemical properties. Common educational uses include:
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Chemical Reactions and Color Changes: Cupric sulfate is often used in experiments to demonstrate various chemical reactions, such as double displacement reactions and redox reactions. For example, when zinc metal is placed in a solution of cupric sulfate, a redox reaction occurs, producing copper metal and zinc sulfate.
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Electrolysis and Electroplating: Cupric sulfate is commonly used in electrochemistry experiments to demonstrate the principles of electrolysis. Students can use it to deposit a layer of copper on a metal object, illustrating the concept of metal plating.
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Crystallization and Hydration Studies: Cupric sulfate crystals are ideal for studying crystallization and hydration. In its hydrated form (CuSO‚„5H‚‚O), it is a vibrant blue, but it turns white upon heating when it loses its water molecules. This change is used to teach about the effects of hydration and dehydration on compounds.
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Identifying Presence of Water: Cupric sulfate can also be used as a qualitative test for water. The blue hydrated form turns white when heated (as it becomes anhydrous), and when a drop of water is added to the anhydrous form, it turns blue again. This makes it an excellent tool for illustrating reversible hydration reactions.
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Demonstrating Copper Ion Properties: The distinct blue color of cupric sulfate is due to the presence of copper(II) ions in solution. It is often used to teach students about the behavior of transition metals and their unique colors in aqueous solutions.
Cupric sulfate should be handled carefully, as it is toxic if ingested and can cause irritation to skin and eyes. Proper safety equipment, including gloves and goggles, should be used during experiments.
Strong Alnico 1 Cylindrical Magnets, shipped in pairs, with separators and keepers. North pole marked with a dot.
Strong Alnico 1 Cylindrical Magnets, shipped in pairs, with separators and keepers. North pole marked with a dot.
Multiple program timer turns on automatically two or more times in 24 hours. Grounded for safety when used in three-prong electrical outlets.
13" W x 42.5" H Pocket Chart with 14 rows of pockets
15 Double-Sided Write & Wipe Analog Clock Faces
20 Double-Sided Write & Wipe Digital Time Cards including 16 blanks
13 Double-Sided Write & Wipe Subject Cards including 8 blanks
3 Bottom Storage Pockets
The Daily Schedule Pocket Chart makes displaying daily classroom schedules easy! This pocket chart was designed with three columns of pockets in 14 rows (42 pockets total). You can display 14 separate events or subjects together with the analog clock faces and digital time cards. Start off by writing the time on the write and wipe clock face and place it in the first pocket. Find the corresponding digital time or write it on one of the 24 blank time cards. Place that card in the second pocket. Finally, find the subject that occurs during this time or write it on one of the 9 blank subject cards provided. Now you have the first activity in your schedule completed. Continue this process as you go through your daily schedule.
The Daily Schedule Pocket Chart is big enough for students to read what is next in the schedule and at what time it occurs, but does not take up much space in the classroom. The bright colors of the cards make the times stand out so they are easy to read.
The Daily Schedule Pocket Chart is also helpful for students who arrive late or for those who want to know where the class is throughout the day. Telling time and organizing your classroom has never been so easy!
Sloping front meters for easy reading. +/- 2.5% accuracy with overload protector and color-coded bar. 4"W x 5.5"D x 3.5" H. External zero adjustment.
Sloping front meters for easy reading. +/- 2.5% accuracy with overload protector and color-coded bar. 4"W x 5.5"D x 3.5" H. External zero adjustment.
Sloping front meters for easy reading. +/- 2.5% accuracy with overload protector and color-coded bar. 4"W x 5.5"D x 3.5" H. External zero adjustment.
Sloping front meters for easy reading. +/- 2.5% accuracy with overload protector and color-coded bar. 4"W x 5.5"D x 3.5" H. External zero adjustment.
Sloping front meters for easy reading. +/- 2.5% accuracy with overload protector and color-coded bar. 4"W x 5.5"D x 3.5" H. External zero adjustment.
Construct & operate a functioning DC motor that demonstrates the uses of the armature, field coil, & commutator. Parts provided include: coil of copper wire, base, field poles, armature core, brushes, & all fasteners. Ages 10 and up. No tools needed for assembly except scissors. Comes complete with 12-page instruction booklet which includes illustrations, detailed assembly instructions, "How a Motor Works". 3-6 volt battery required for operation (not included).
Construct & operate a functioning DC motor that demonstrates the uses of the armature, field coil, & commutator. Parts provided include: coil of copper wire, base, field poles, armature core, brushes, & all fasteners. Ages 10 and up. No tools needed for assembly except scissors. Comes complete with 12-page instruction booklet which includes illustrations, detailed assembly instructions, "How a Motor Works". 3-6 volt battery required for operation (not included).
Sloping front meters for easy reading. +/- 2.5% accuracy with overload protector and color-coded bar. 4"W x 5.5"D x 3.5" H. External zero adjustment.
Sloping front meters for easy reading. +/- 2.5% accuracy with overload protector and color-coded bar. 4"W x 5.5"D x 3.5" H. External zero adjustment.
Sloping front meters for easy reading. +/- 2.5% accuracy with overload protector and color-coded bar. 4"W x 5.5"D x 3.5" H. External zero adjustment.
Sloping front meters for easy reading. +/- 2.5% accuracy with overload protector and color-coded bar. 4"W x 5.5"D x 3.5" H. External zero adjustment.
Introduce the world of microscopy to your students through the selection of this prepared slide set. High-quality, yet affordable, 1€� x 3€� slides labeled and stored in a slotted plastic container. Set of 10 prepared slides.
Set Includes:
M1 Anthrax (Bacillus Anthracis)
M2 Tetanus (Clostridium Tetani)
M3 Botulism (Clostridium botulinum)
M4 Typhoid Fever (Salmonella typhosa)
M5 Epidemic Dysentery (Shigella dysenteriae)
M6 Tuberculosis (Mycobacterium tuberculosis)
M7 Supperative and Putrefying Infections (Proteus vulgaris)
M8 Virulent Pneumonia (Klebsiella pneumoniae)
M9 Hemolytic Infections such as Strep Throat (Streptococcus pyogenes)
M10 Blue-Pus Infections such as Wound and Burn Infections (Pseudomonas aeruginosa)
Introduce the world of microscopy to your students through the selection of this prepared slide set. High-quality, yet affordable, 1€� x 3€� slides labeled and stored in a slotted plastic container. Set of 10 prepared slides. Includes: Anthrax (Bacillus Anthracis) Tetanus (Clostridium Tetani) Botulism (Clostridium Botulinum) Typhoid Fever (Salmonella Typhosa) Epidemic Dysentery (Shigella Dysenteriae) Tuberculosis (Mycobacterium Tuberculosis) Supperative and Putrefying Infections (Proteus Vulgaris) Virulent Pneumonia (Klebsiella Pneumoniae) Hemolytic Infections such as strep throat (Streptococcus Pyogenes) Blue-pus Infections such as wound and burn infections (Pseudomonas Aeruginosa)
Convert our SA869P A-frame sign into a 2-sided message board sign; displays 7 lines of copy. Contains: 2 large (24" x 36") white sign face with letter tracks,1 - Set of 314- 4" black letters and 4" red numbers and symbols, 1 - Set of 22- 8" red numbers 1 - Set of 2 double-sided header cards, "Sales" and "Special" (red).
35" x 14" High quality N-series mesh. 3M Scotchlite reflective material high intensity tape. Has 3M reflective material high intensity trim. Adjustable front flaps and a full length hook and loop closure for a secure fit.
Limited Quantities Available
Kit includes 1 each of Test Tube Rack for 6, Test Tube Brush, Test Tube Clamp, Crucible Tongs, Lab Scoop, 6" Spatula and Forceps.
For use with 15297, 04235 and 98388 landform models. Set of 10 lab investigations workbooks includes 20 pages of activities involving students in locating and identifying features on the models, observing, speculating and recording the practical influence of geography upon economic and social activities of man.
Lime green mesh vest with Velcro tab closures and elastic side straps with 2" orange/silver reflective material stripes. Vest measures 47" x 18" and one size fits all.
Orange mesh vest with Velcro tab closures and elastic side straps with 2" lime/silver reflective material stripes. Vest measures 47" x 18" and one size fits all.
Shows over 100 intricate body structures. Outside shows superficial musculature, rib-casing, etc. Torso opens to expose respiratory, circulatory, digestive, nervous, and urinary systems. Lungs, heart, stomach, liver, and intestines are removable. Stands on a base or can be laid flat. 56 pg. lesson plan included with student observations and data sheets. 28" x 12".
This pre-assembled DC motor is designed for students to learn about electromagnetic forces. The open structure resembles the diagram found in many textbooks. The polarity of the magnets can be reversed to change the direction of rotation. The motor can also be used with a rheostat to observe the change of speed with the change of current. The DC motor can stand vertically or horizontally and operates on a 1.5V battery (not included). It comes in a sturdy plastic storage case with a student activity manual Shipping weight: 11.45 oz., dimensions: 5.5" x 4.5" x 2.5".
This scale offers a large faceplate for easy viewing. A versatile and inexpensive way to measure a variety of materials in classrooms and laboratories. Sturdy aluminum scales have giant numbers that will be visible from anywhere in the classroom. 8 1/2 inch diameter. 20hg capacity, 0.5hg readability
This scale offers a large faceplate for easy viewing. A versatile and inexpensive way to measure a variety of materials in classrooms and laboratories. Sturdy aluminum scales have giant numbers that will be visible from anywhere in the classroom. 8 1/2 inch diameter. 20hg capacity, 0.5hg readability
Den-Test is a science experiment which allows students to cultivate bacterial growth from their own teeth. See the difference in bacteria growth development from the "before brushing" and "after brushing" samples. Used also to illustrate bacterial growth on dirty hands, desk tops, money, etc. Includes 24 sterile petri dishes, 48 sterile swabs, 2 bottles agar gel and instruction manual. Grades 5-10.
Den-Test is a science experiment which allows students to cultivate bacterial growth from their own teeth. See the difference in bacteria growth development from the "before brushing" and "after brushing" samples. Used also to illustrate bacterial growth on dirty hands, desk tops, money, etc. Includes 24 sterile petri dishes, 48 sterile swabs, 2 bottles agar gel and instruction manual. Grades 5-10.
Balls set of 14 drilled 1", 2 each of aluminum, brass, copper, iron, lead, zinc and wood.
Balls set of 14 drilled 1", 2 each of aluminum, brass, copper, iron, lead, zinc and wood.