Plant Growth Investigation The scientific method is a way to ask and answer scientific questions by making observations and doing experiments. The question I was attempting to answer was; what are the effects of different types of water on the growth of grass? My hypothesis was if we water the grass seeds with bottled, tap, and salt water, then the seeds getting the bottled water will grow the best and be the tallest at the end of the experiment because the bottled water doesn’t have the toxins that the salt and tap water will have. We needed a lot of materials to conduct our experiment they were; • 6 Seven ounce cups • Soil • Seeds (20 per cup) • The 3 types of water (Salt, Bottled, Tap) • Graduated Cylinder • Ruler • Pencils • Sharpie • Our chart/packet Our procedure was to first gather all of the materials we needed. We first labeled each cup with what type of water we were going to use.
After 10 min, add the potatoes. Let 10 more minutes pass then add the corn-on-the-cob. After 10 more minutes, add the crab meat. 2 minutes later, add the shrimp. Cook for 4 more minutes, then drain liquid from pot and pour contents over a clean, unused large garbage bag or newspapers.
Water the seeds daily until the grass is at least 1.5 inches tall. Take 20 seeds from a rapid growing weed plant and evenly plant 10 in each box. Water the grass regularly until weeds start to grow throughout the grass. Follow directions for each weed killer and apply is to the boxes of grass/weeds. Make sure to use the same amount of weed killer in each box.
From your three trials, calculate the average volume of Na2S2O3 needed for the titration of 25.00mL of diluted bleach. 3. Use the average volume and the molarity of Na2S2O3 to determine the molarity of the diluted bleach. (Find moles of Na2S2O3, convert to moles of NaClO, and divide by volume of dilute bleach that was titrated in each trial to get M). 4.
Materials: * Heavy duty zip-lock baggie * 1 strawberry (fresh or frozen and thawed) * Cheesecloth * Funnel * 100 ml beaker * Test Tube * Wooden coffee stirrer * DNA extraction buffer * Ice-cold 95% isopropyl alcohol Hypothesis: DNA can be extracted if you use certain buffers. Procedure: 1. Place one strawberry in a zip lock baggie and carefully press out all of the air and seal the bag.
Calculate the molarity of the original vinegar solution and its concentration in gdm-3, given that it reacts with NaOH in a 1:1 ratio. 7. 2.5 g of a sample of ethanedioic acid, H2C2O4.nH2O, was dissolved in water and the solution made up to 250 cm3. This solution was placed in a burette and 15.8 cm3 were required to neutralise 25 cm3 of 0.1 moldm-3 NaOH. Given that ethanedioic acid reacts with NaOH
READ THIS LAB BEFORE COMING TO CLASS. Introduction: In this lab exercise we will study the effects of an abiotic (non-living) factor on seed germination (the beginning of seed growth which is usually seen with emergence of a small white root). We will also be stressing the use of graphing skills. We will use a common seed available in grocery stores, red kidney beans. These plants do not live near the sea normally.
This composting lab. Will last 14 days. • I checked the moisture of compost piled every two days and added water as needed. • I gave a gentle shake to the composting organic matter once a week. • Observed the compost, and collected data from 03/27/2015 to 4/10/2015; as follows: Date, temperature, odor, texture, and changes.'