Identify the following samples of matter as macroscopic, microscopic, or particulate: (a) a human skin cell; (b) a sugar molecule; (c) a blade of grass; (d) a helium atom; (e) a singlecelled plant too small to see with the unaided eye.

Q: Which of the following is a chemical property of Sodium?A.melts at 60°CB.soft solid C.density of…

A: Chemical property is a characteristic of a compound that can be observed after it undergoes in a…

Q: A 13.6 mL sample of polystyrene used in a styrofoam cup weighs 0.222 g What is the density of…

A: Given,  Volume of polystyrene = 13.6 mL  Weight of the polystyrene = 0.222 g  Density of polystyrene…

Q: Classify each change as physical or chemical. (a) the rusting of iron(b) the evaporation of…

A: Physical change changes the size, shape or phase of substance, Chemical change is a type of change…

Q: When a 1.271g Tums tablet reacted with 44.485 mL of hydrochloric acid (density: 1.140 g/mL), carbon…

A:

Q: 4. How sizing down to Nano affect material properties?

A: Since  substances at the nanoscale level have a greater surface-to-volume ratio, which causes them…

Q: which of the following are chemical changes? which are physical changes? cutting of food,…

A: If the reaction is irreversible and bond making and bond breaking occur in the reaction and then…

Q: 1.) Which macroscopic characteristics differentiate solids, liquids, and gases? (List as many as…

A: Hi there, as there are multiple questions posted. We are answering the first question. If you need…

Q: Classify each description as a hypothesis, theory, or law.-An untested explanation based upon…

A: Hypothesis is a guess or tentative explanation that has to be tested and investigated further. A…

Q: What is the volume, in L, of a room that is 8.00 ft x 10.00 ft x 10.0 ft?

A: The volume in liters has to be determined. Some of the common conversion factors that will be useful…

Q: The total weight of copper in a vehicle ranges from 15 kilos for a small car to 28 kilos for a…

A: The weight will affect the car acceleration and deacceleration which tells that how better a car can…

Q: Which of the following represent a chemical change? Which of the following represents a physical…

A: We are to discuss which of gives changes are physical and chemical changes.

Q: The average radius of a molecule of lysozyme, an enzyme in tears, is 1.430 nm. What is its radius in…

A:

Q: Which substance can be separated by filtration?  A. Compound B. Element C. Mixture D. Solution

A: Matter exhibits two types of property:  Physical and chemical

Q: Which of the following items are a matter and which are not? a flashlight, a sunlight, an echo, a…

A: Matter is anything that has mass and occupy space.

Q: 6.Matter is classified as follows a)Ätoms and molecules b) Pure substances and mixtures.…

A: Any thing which has mass, occupies space and can be perceived by human senses is known as matter.

Q: Sound, light, feelings and ideas are not considered to be matter. Which of the following best…

A: Why sound , light, feelings and ideas are not considered to be matter?

Q: 6. How can you use 7. Complete the chart below, cut it out and staple it into your journal.…

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Q: A combination of at least two materials, one of which is a metal whose properties are different from…

A: Alloy is the combination of  two metals or a metal and  non metals to form a new product with…

Q: 4. How do you distinguish a. Chemical properties from physical properties b. Distillation from…

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Q: What are several political, social, or personal considerations that might affect a scientist's…

A: Science is severally affected by culture which includes political, social and religious ideologies.…

Q: If matter is uniform throughout and cannot be separated into other substances by physical means, it…

A:

Q: A rectangular block of iron metal weighs 235.8g. The dimensions of the block are 8.4 cm by 5.5 cm by…

A: We have to determine the density of the iron block.The mass of the iron block is given so we have to…

Q: (d) Complete the following statements: (i) The three are solid, liquid and (ii) The three scales are…

A: Please find the answers here in serial wise  manner.

Q: Indicate for the examples below if the property is qualitative physical, quantitative physical, or…

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Q: Soft wood chips weighing 17.2 kg are placed in an iron vessel and mixed with 150.1 kg water and…

A: (a)

Q: Is sugar an element or a compound? C12H22011 Is water an element or a compound?

A: An element contains same type of atoms. A compound contains different types of atoms.

Q: The engine in a boat has a displacement of 350in^3 what is the displacement of this in ft^3 in cm^3…

A:

Q: If matter is uniform throughout and cannot be séparated into other substances by physical means, it…

A: If a matter is uniform throughout and can not be separated into other substances by physical means,…

Q: Express the answers to the following calculations inscientific notation:(a) 145.75 + (2.3 × 10−1)(b)…

A: Scientific Notation: It is a way of expressing number in the form of powers of 10 to specify the…

Q: is cutting a cake a physical or chemical reaction?

A: Physical change: a change after which nothing new is created and not old one is destroyed.

Q: The alchemical, medical, and technological traditions were precursors to chemistry. State a…

A: Contributions made to develop the science of chemistry are 1.The Alchemist tradition: It is the…

Q: A ______________________is the physical combining of two or more substances (not necessarily…

A:

Q: Bacteria vary somewhat in size, but a diameter of 2.0 micrometers is not unusual. What would the…

A: Given, Diameter of the bacteria d = 2.0 μm Radius r = d/2 = 2.0/2 = 1.0 μm The shape is assumed to…

Q: To wire your stereo equipment, you need 325 centimeters (cm) of speaker wirethat sells for $0.15/ft.…

A: Convert centimetre into feet. 1 cm = 0.0328 foot325 cm = 325 × 0.0328 foot325 cm = 10.66 foot or…

Q: . In the stone age, it took this long to cut down a tree? () 1 hour, 1 day, 1 week or 1 month? 2. An…

A: As per Bartleby guidelines,we can answer only first three questions only. So we can't answer other…

Q: To aid in the prevention of tooth decay, it is recommended that drinking water contain 0900 ppm…

A: Given  0.900 ppm = 0.900 g/106 cm3 water dimensions of cylindrical water reservoir diameter = 5.29 x…

Q: In which state of matter do the particles of a chemical have the highest kinetic energy?

A: The state of matter in which the particles will be packed loosely will have maximum movement of the…

Q: If an electric car is capable of going 225 km on a singlecharge, how many charges will it need to…

A: Since 1 km = 0.621 miles The charges as the trip begin with a full charge is calculated as Since 1…

Q: How can you differentiate between natural and engineered nanoparticles in the environment?

A: The nanoparticles which occur in nature are called Natural Nano particles. These are generally found…

Q: Which intensive physical property is observed when the droppings of a person seated inside a closed…

A: Intensive property is the one  does not depend on the amount of substance.

Q: Suppose the metallic paper clips (which contain iron) had been replaced by magnesium or nickel.…

A: Ferromagnetism It is a property of substance in which metals act as a permanent magnets. Also it…

Q: The SI unit for energy is the joule (J), which is equal to the kineticenergy possessed by a 2.00-kg…

A: Conversion of velocity from m/s to mph is done in the following way, m to km, km to mi, and s to h,…

Q: Sodium and potassium are both shiny metals in pure form, but corrode rapidly in the presence of…

A: The reaction of sodium and potassium with oxygen gas and humidity can be shown through the balanced…

Q: Determine whether the following statements describechemical or physical properties: (a) Oxygen…

A: Note: Since you have posted a question with multiple subparts, we will solve the first three…

Q: List each as being a physical or a chemical property: copper sulfate is blue, iron is a solid, water…

A: Given: Copper sulfate is blue, iron is a solid, water melts at 0°C, gasoline is flammable, magnesium…

Q: Consider One Particular Issue in Our Society (for instance: industry, etc.,) and Describe and…

A: Industry It is an organization that provides and supplies goods and services. It could be primary,…

Q: Which of the following statements describe physicalproperties and which describe chemical…

A: Physical property - Physical properties are the property of matter which does not change its…