Regardless of the size or source of elements, a given compound is always composed of the same proportion of elements. The connected large and small paper clips (Lg and Sm) are synonymous to a compound composed of elements (Lg and Sm). In the third trial, use fewer large paper clips and more small paper clips. In the second trial, use more large paper clips and fewer small paper clips. In the first trial, use approximately the same number of large and small paper clips. The procedure is almost exactly the same as the one used for law of conservation of mass, except you perform 3 trials. Large and small paper clips can also be used to show the law of definite proportions. The total mass of paper clips before combining is the same as the total mass of combined paper clips and remaining paper clips. Find the mass of any remaining large or small paper clips and record it. Find the mass of combined paper clips and record it.
![paper clip box paper clip box](https://www.domzopak.com/wp-content/uploads/2022/07/WND115-Image-3.jpg)
Continue connecting 1 large and 1 small paper clip until 1 size of the paper clips is used up. Next, use a balance to find the mass of large paper clips and record it. Use a balance to find the mass of small paper clips and record it. Without counting, obtain a sample of small and large paper clips. Show the law of conservation of mass using large and small paper clips.
![paper clip box paper clip box](https://ae01.alicdn.com/kf/HTB1kORzmNuTBuNkHFNRq6A9qpXa0/33mm-Company-Office-Paper-Clips-500-pcs-per-Box-Assorted-colors.jpg)
Carolina ChemKits®: Elements, Compounds, and Mixtures Kit (item #840968).A sieve can be used to separate large and small paper clips. Metal paper clips contain a small amount of iron, and can be separated using a magnet. Plastic paper clips will float in water, and can be separated using density. Represent them as a combination of both elements and compounds.ĭemonstrate how physical properties can be used to separate mixtures of plastic and metal paper clips of various types and sizes. Unlike elements or compounds, mixtures are not constant in composition.
![paper clip box paper clip box](https://www.mojopromotions.co.uk/images/products/paper_clips_in_candy_box/image/3/large_product.jpg)
Use a different color paper clip to represent each element in a compound and link them together. Monatomic elements are represented using individual paper clips, whereas diatomic elements are represented using interlocked paper clips of the same color. Each paper clip color represents a different type of atom. Use groups of colored paper clips to create models of elements, compounds, and mixtures.
![paper clip box paper clip box](https://cdn.shopify.com/s/files/1/0532/2450/5496/products/0009947fe96fe53ce01c79458c1371ab3c6e223acbf658c947be83b238aea41c_1024x1024.jpg)
Investigating Measurement and Density Kit (item #751060).The calculated unit conversion for each object may be off, but the average will be very close to 2.54, giving a low percent error. The accepted ratio for inches to centimeters unit conversion is 1":2.54 cm. Find the average of calculated unit conversions and then calculate the percent error. Use dimensional analysis and each object’s measurements to find the unit conversion for inches to centimeters. For example, convert from 1 inch to centimeters using the following paper clip measurements:įurther refine your inches to centimeters conversion factor by measuring the length of additional classroom objects (adhesive notes, binder clips, pencils, etc.) in both inches and centimeters. Use these measurements to find the unit conversion for inches to centimeters (how many centimeters are in 1 inch) through dimensional analysis. Use a ruler (or calipers, if available, for greater accuracy) to measure the length of a paper clip in both inches and centimeters. Paper clips are a great tool to explore a variety of chemistry concepts, including measurement, matter, atomic structure, chemical reactions, and gases.Ĭlassroom objects (such as paper clips) can be used to practice measurement, unit conversions, dimensional analysis, and percent error. Are you looking for inexpensive chemistry activities? Look no further than your office supply cabinet.