Chemistry •Matter • • • States Properties Classification Chemistry is the study of the composition‚ properties and structure of matter. it is considered “the central science”; blending at one extreme into physics‚ mathematics‚ engineering and sometimes into earth and life Chemistry Is the study of the matter‚ its classification‚ composition‚ properties and structure; the changes it undergoes‚ the energy transformation that goes with the change‚ and the laws and principles governing such changes
Premium Energy Chemical substance Chemistry
Based on the prompt above‚ “You are going to test your body’s ability to maintain homeostasis. You will test this by monitoring a person in your group’s breathing rate‚ heart rate‚ and qualitative observations” we devised a hypothesis which states that if a person exercises‚ his/her heart rate‚ breathing rate and sweat (qualitative observation) will increase in order for our bodies to maintain homeostasis and control our bodily functions. Based on our experiment we found that in Trial 1 the heart
Premium Heart Oxygen Physical exercise
“WATER IS A GOOD SOLVENT” Water is very unique in all facets of its nature. The chemical formula for water is H2O as a water molecule consists of two atoms of the chemical element hydrogen (H) and one atom of the element oxygen (O). Water is the most abundant chemical compound on earth as its mass all exists together‚ naturally‚ in its gaseous‚ liquid and solid state. It is the most precious natural resource to man and is essential to life for all discovered living organisms. One of the unusual
Free Atom Chemical bond Covalent bond
handout attached to the back of lab Observations Table 1: The mL of oxygen produced with increase of catalase 30secs 60secs 90secs 120secs 150secs 180secs Disks: 2 17ml 16ml 21ml 26ml 31ml 35ml Disks: 4 8ml 19ml 27ml 35ml 44ml 53ml Disks: 6 15ml 23ml 32ml 44ml 54ml 65ml Disks: 8 25ml 42ml 70ml 90ml 100ml at 2:20 secs Disks: 10 29ml 58ml 87ml 100ml at 1:46 secs Table 2: The mL of oxygen produced with increase of H202 30secs 60secs 90secs 120secs
Premium Catalase Oxygen Hydrogen peroxide
and 45 (cm)) (±0.05) on the photosynthetic rate by counting the number of oxygen bubbles rising up the test tube per minute (bubbles min^(-1)). The hypothesis was supported because as the light intensity increased‚ the rate at which oxygen bubbles rising to the top of the test tube also increased – for example‚ at the closest distance of 5 cm‚ the rate of photosynthesis was at its highest‚ with the optimum amount of oxygen bubbles being produced. At a distance of 5cm‚ the average number of bubbles
Premium Photosynthesis Light Plant
eventually led to the creation of stars and galaxies. Space as we know it was created‚ and is still expanding at a very rapid rate while becoming much cooler. 2.) What is the evolution of Earth’s atmosphere? In particular‚ what has happened to the oxygen levels over the Earth’s 4.6 billion year history? Answer: “Breathe in all the positivity‚ and breathe out all the negativity”‚ these are some words I say when I’m going through anything that is stressful in life. The process of breathing for has
Premium Universe Big Bang Galaxy
atomic number = 74)? a) 30.0 g FeWO4 b) 304 g FeWO4 c) 82.6 g FeWO4 d) 188 g FeWO4 d) FeSO4 4. A compound contains 20.2% magnesium‚ 39.8% titanium‚ and 40.0% oxygen by mass. What is the empirical formula of this compound? a) MgTiO b) MgTi2O3 c) Mg2TiO4 d) MgTiO3 5. Which of the following DOES NOT contain 4.00 moles of oxygen atoms? a) 2.00 moles of CO2 b) 128.0 g of SO2 c) 0.40 moles of P4O10 d) 4.00 moles of KClO3 6. A compound has an empirical formula of C2HBr. If the molar mass
Premium Oxygen Atom Molecule
determining the formula of the compound that results when Magnesium and Oxygen react. Theory: The purpose of this lab was to confirm the chemical formula of magnesium oxide by comparing the masses of pure magnesium solid prior to any reaction and magnesium oxide solid after a reaction between all of the magnesium and oxygen from the air when heated from a Bunsen burner in a crucible. Using molar masses of both magnesium and oxygen‚ an expected percent composition‚ by mass‚ was found and compared to
Premium Magnesium Oxygen Mass
muscles? Background Normally‚ muscles use oxygen through a process known as cellular/aerobic respiration to make energy (or ATP) from sugar (glucose). This process is very efficient and produces 38 ATPs for each molecule of glucose. Carbon dioxide and water are the results of this reaction. When muscles undergo rigorous exercise they require more oxygen to make ATP than the blood can supply. At this point the muscle is forced to produce ATP without oxygen. This is known as anaerobic respiration
Premium Oxygen Muscle Cellular respiration
Joseph Priestly is another scientist who discovered photosynthesis when he does the mint in a jar experiment he soon discovered oxygen her are his measurements: Hypothesis: if I put a candle in a jar with a leaf of mint in it then it will burn until it runs out. Independent Variable: The jar doesn’t depend on anything. Dependent Variable: The candle depends on the oxygen to stay lit. Controlled Variable: The air is the controlled.
Premium Water Oxygen Caffeine