Biology, 05.07.2019 23:30 paulinahunl17
Pls conservation of mass activity worksheet instructions: observe and analyze the interactions between the substances pictured in the slide show. compare the properties of substances before and after each interaction. you will submit your completed worksheet for grading. data table on the table below, record your observations before and after the interactions and note if mass was conserved. describe the changes in properties that prove a chemical reaction occurred. the first row is an example. observations before interaction observations after interaction was mass conserved? proof of a chemical reaction example: sugar + heat the sugar is in tiny white particles in a pile. heat is not seen but is implied by the heat source. the pile of sugar in the pot weighs 100 grams. there is a solid, light brown mass at the bottom of the pot. it weighs 100 grams. yes, both the reactants and the products weigh the same. there was not a chemical reaction. sugar did not change composition. it only melted. melting point is a physical property, and this is a physical change. steel wool + oxygen (fire)= egg + heat= water + heat= zinc + hydrogen chloride sodium hydroxide + copper sulfate=
Answers: 1
Biology, 21.06.2019 20:00
Which of these is a major trend in land plant evolution? a) the trend toward smaller size b) the trend toward a gametophyte-dominated life cycle c) the trend toward a sporophyte-dominated life cycle d) the trend toward larger gametophytes
Answers: 2
Biology, 22.06.2019 01:00
An example of internal feedback working to maintain homeostasis is your a. decreased respiration rate when you are studying b. decreased heart rate when you are sad c. increased respiration rate when your muscles need more oxygen d. increased heart rate when your lungs need more oxygen
Answers: 1
Biology, 22.06.2019 16:00
In sheep, the allele for belly fur (a) is dominant to the allele for no belly fur (a). a mother with the genotype aa and a father with the genotype aa produce an offspring.
Answers: 1
Pls conservation of mass activity worksheet instructions: observe and analyze the interactions bet...
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