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Chemistry
Chemistry
High School
I NEED HELP ASAP!!Scientific InquiryScience is the investigation of the ______________ ________________. Biology is the branch of science that studies ___________ _______________ and the environments they live in.The Scientific MethodThe scientific method is a __________________ used during a scientific ____________________ to answer a scientific question. Qualitative data is something that cant be________________ but can change over time.Scientific inquiry cant answer questions about a persons beliefs, ethics, _________________, and feelings.Which of these are questions that science can answer?A. Was the flu vaccine more effective this year than last year?B. Is it ethical to use stem cells in human research?C. Does a drop in temperature affect the number of offspring that frogs produce?D. Will people feel better if they eat organic produce instead of conventionally grown produce?E. Are coffee drinkers worried about their heart disease risk?Construct Hypotheses and PredictionsA hypothesis is a plausible __________________ for a particular fact. The hypothesis needs to be ____________________ or ____________________ based on collected evidence. All studies must have at least one hypothesis.
Chemistry
High School
Is carbon dioxide a polar molecule? Why or Why Not?
Chemistry
High School
Different microscopic organisms cause differentdiseases. When a dangerous microscopic organismistransferred from one person to many people thedisease it cames will spreadWhy is this considered a theory instead of a hypothesisor a law?
Chemistry
High School
Ninety percent of plastic is made from the same stuff used tomanufacture:
Chemistry
Middle School
When a log burns in a fire, a a physical change has occurred. b mass is gained. c new substances are formed.
Chemistry
Middle School
Which of the following descriptions matches the motion shown in the graph. A person leaves home and slows down for a pedestrian. A person leaves home, picks up speed, and then stops at a red light. A person is parked at parking lot and then speeds off. A person walks down the block at a steady speed. If I already asked this but please help ;v;
Chemistry
High School
experimented with oil and water layers in 1917. He proposed that thein the oils pointed away from the water A. Charles Overton, phosphate heads. B. Irving Langmuir, fatty acid chains C. Hugh Davson, proteins. D. Gregor Mendel, fatty acid chains
Chemistry
College
Convert 2.6 x 106 mL to L.
Chemistry
High School
What do you call an idea or explanation that you test through study and experimentation?
Chemistry
High School
1. Calculate the number of moles in each of the following masses:a. 64.1 g of aluminum ans: 2.38 mol Al show work
Chemistry
High School
Helppppp fast please will give brainliest
Chemistry
College
I would like some help on this please.
Chemistry
High School
what is action force?
Chemistry
High School
I am a common cation that is found in the alkali group. I am found in salt. I have a +1 charge. What am I?
Chemistry
College
When does a single-displacement reaction occur?A. When a substance, usually containing carbon, reacts with oxygento produce energy in the form of heat and lightB. When one element replaces another element in a compoundduring a chemical reactionC. When a substance is broken down into two or more simplersubstances in a chemical reactionD. When a single element forms two double elements
Chemistry
High School
Which statement best explains how the passage fitsthe realistic fiction genre?
Chemistry
College
What are the four main types of tissues in the human body?epithelialdermalvascularconnectivemusclenervous
Chemistry
College
100 POINTS HELP!!!!!!!!!!!!!!!!!!!!
Chemistry
High School
A. Lithium and cadmium are in the mixture. Strontium is not in the mixture.B. Lithium and strontium are in the mixture. Cadmium is not in the mixture.C. Cadmium and strontium are in the mixture. Lithium is not in the mixture.D. All of the shown elements are present in the mixture.
Chemistry
High School
can you guys help me please? I dont get what im supposed to do here.
Chemistry
College
Refer to the Chemical Compounds table above. How many total elements are inEthanol?
Chemistry
High School
Plz help!Which elements form covalent bonds? Which other element is included in the group?
Chemistry
High School
Which of the models best represents CaCO3?
Chemistry
College
answer this question
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