Question

matching: total = 23/25 date/block: organic chemistry a. the variable that is manipulated. hypotheses b. the variable that is measured or observed during an experiment. analytical chemistry c.a proposed explanation for an observation. independent variable d. chemistry of carbon containing compounds dependent variable e. a variable that is kept constant. f. chemistry that deals with composition of matter. multiple choice: answer the following questions based on the shown below: 1. matter includes all except: a. silicon b. neon c. water d. empty space 2. chemists who work in the biotechnology field are most likely to work with: a. x - ray technicians b. geologists c. physicians d. physicists 3. name at least two “big ideas” in chemistry.why are they important? (4pts)

Explanation:

• Matching: Organic chemistry is the study of carbon - containing compounds. Hypotheses are proposed explanations for observations. Analytical chemistry deals with the composition of matter. The independent variable is the one that is manipulated, and the dependent variable is the one that is measured or observed.
• Multiple - Choice 1: Matter is anything that has mass and takes up space. Silicon, neon, and water are forms of matter, while empty space is not matter.
• Multiple - Choice 2: In biotechnology, chemists often work with physicians as they are involved in developing drugs and understanding biological processes at a molecular level.
• Question 3: Two big ideas in chemistry could be the concept of chemical bonds (which are important as they determine how atoms combine to form molecules and compounds, affecting the properties and reactivity of substances) and the law of conservation of mass (which is fundamental in chemical reactions as it ensures that the total mass of reactants equals the total mass of products, allowing for stoichiometric calculations).

Answer:

• Matching:
• Organic chemistry: D. Chemistry of carbon - containing compounds
• Hypotheses: C. A proposed explanation for an observation
• Analytical Chemistry: F. Chemistry that deals with composition of matter
• Independent variable: A. The variable that is manipulated
• Dependent variable: B. The variable that is measured or observed during an experiment
• Multiple Choice 1: d. Empty space
• Multiple Choice 2: c. Physicians
• Question 3: Two big ideas could be chemical bonds (important for determining molecular structure and reactivity) and the law of conservation of mass (essential for stoichiometry in chemical reactions).