Q: A substance has a definite shape and definite volume. What is the state of the substance?(a) solid…
A: The substance also called matter having fixed shape and fixed volume?
Q: When a substance changes from a liquid to a solid, which of the following is TRUE? a) b) c) The…
A: There are more attraction forces between the particles of solid than that of liquid.
Q: Explain what is meant by the salinity of water?
A: Salinity: It is term used to define saltiness of solution. A solution is said to be saline if it…
Q: Compare and contrast a frozen freezer pop with one that is still in the liquid state. Describe the…
A: In a substance, the state of the matter or the phase of the substance depends on the arrangement of…
Q: What is a solid dispersed in either a solid or liquid?
A: Solid dispersed in either a solid or liquid is called:
Q: Which corresponds with the image attached? A. Liquid B. Crystalline Solid C. Gas D.…
A: In the given diagram, the different Molecules move continuesly and get back to change their initial…
Q: How many phases does matter have?
A: A matter can have maximum five phases. Which are given below in step 2
Q: We use the . difference to separate a liquid mixture by distillation. O Melting point Flash point…
A: The temperature at which the solid substance is converted to liquid substance is known as melting…
Q: Examine the statement. Liquid water has a constant density. Do you agree or disagree with this…
A:
Q: When blue food coloring is dissolved in water, the result is a ________? a. homogeneous mixture…
A: When particles moves from higher concentration to lower concentration than diffusion occurs. The…
Q: Differentiate between solids and liquids in terms of the arrangement AND motion of the particles
A: Difference between solids and liquids on the basis of their arrangement and motion of the particles…
Q: At which temperature does water have its greatest density?
A:
Q: Why are some substances gases, some liquids, and others solids?
A: Matter : Matter is anything which occupies space and it has mass. A phase is that form of matter…
Q: Explain the process of phase changes in matter.
A: Things around us which has mass and occupy space are called matter. Matter exists in three different…
Q: How many grams of water can be heated from 25.0 °C to 80.0°C using 12500.0 Joules?
A: The heat required to raise the temperature of a substance can be expressed as :
Q: A heating curve for water has been provided below. F A G D C Time Based on this graph, answer the…
A: 1. this is an endothermic graph as on y axis the temperature is increasingand so does the graph line
Q: Which branch of chemistry studies the composition of substances? The environmental impact of…
A: Chemistry involves the systematic study of various branches related to molecules wherein every…
Q: Compare the compressibility of solids and liquids. Support your answer by describing the arrangement…
A: To compare the compressibility of solids and liquids.
Q: What branch of chemistry would study the amount of mercury present in a soil sample? Explain.
A: Mercury is an element present in periodic table.It has atomic number of 80 and has…
Q: List three examples of substances. Explain why each is a substance.
A: List three examples of substances. Explain why each is a substance.
Q: 1. What state of matter is achieved if a large amount of energy is added to a solid? A liquid? A…
A: There are three states of matter namely, solid, liquid, and gas. The intermolecular forces of…
Q: What is a homogeneous mixture?
A: To find: The definition of homogeneous mixture
Q: List at least three physical properties of water.
A: State three physical properties of water.
Q: Define the phases of matter and phase change?
A: The state of matter that is uniform throughout in physical state and chemical composition is known…
Q: is distilled water pure substance?
A: Distillation is a purification technique. In this process each compound from the mixture get…
Q: States of matter are distinct forms that different phases of matter take on. How many physical state…
A: Solution - States of matter are distinct forms that different phases of matter take on. 3 physical…
Q: 27. When it rains on you, which process just occurred? 28. In which state of matter is atmospheric…
A: A) When it rains, the condensation process takes place. Water evaporates from the earth's surface in…
Q: .The amount of energy involved in melting a substance without changing its temperature is called the…
A: We know that, A) heat of vaporization: it is the amount of energy require to convert liquid into…
Q: The changing of a liquid to a solid is called
A: ANS : FREEZING LIQUID TO SOLID FOR EXAMPLE WATER(liquid) INTO ICE (solid) FREEZING POINT OF WATER…
Q: 1.Can the states of matter change from one form to another (ex solid to liquid)? Yes or No? How?…
A: Answer: Matter exists in three physical states: 1. Solid state 2. Liquid state 3. Gaseous state
Q: Air is a mixture of many gases, primarily nitrogen, oxygen, and argon. Could distillation be used to…
A: Air is a mixture of many gases, primarily nitrogen, oxygen, and argon. Could distillation be used to…
Q: B. Complete the table below using the following terms (Solid, Liquid, Gas) Phase Change From To…
A: Here giving some properties related to phase of matter that is solid, liquid and gas from this we…
Q: Why is arrangement of the constituent atoms or molecules are important in determining the properties…
A: The arrangement of the atoms or molecules is more important in determining the properties.
Q: Consider three 10-g samples of water: one as ice, one as liquid, and one as vapor. How do the…
A: The volume of solid and liquid phase of water can be calculated by the expression given in the…
Q: wo pans of water are on different burners of a stove. One pan of water is poiling vigorously, while…
A: ANSWERE IS DISCUSSED BELOW :
Q: Ice naturally floats on water due to its lower density. If ice did not float on top of water,…
A: if ice did not float life underwater would be impossible it stays on the top and ice slowly gets…
Q: It is observed that oil floats on top of water. What physical property accounts for this observation
A: Given : oil floats on top of water
Q: e. What are the properties of matter that corresponds to the molecular behavior?
A: Matter is anything that occupies space and has mass. All physical objects are composed of matter,…
Q: What is a unit of volume of solids
A: Volume of any substance is defined a the space that particular substance takes up,at any particular…
Q: Heat and Phase changes Phase changes Term used for Increase or decrease? Exothermic or phase change…
A: Phase change is defined as when one state of matter changes to another form. The phase change occurs…
Q: Ice naturally floats on water due to its low density. If ice did not float on top of water, describe…
A: It is known that ice floats on water. The reason for this is "the volume occupied by specific amount…
Q: Using a few words and a simple diagram, explain what is happening when a molecular compound boils…
A: When a molecular compound boils upon heating, the molecule gets energetic. The molecule that are…
Q: How do the particles move in a liquid?
A: A particles are the small portion of a matter. It can be described as small localized object…
Q: We use the .. difference to separate a liquid mixture by distillation. .......
A: In simple words, Distillation is a process that involves the conversion of a liquid into its vapour…
Q: If iodine melts at 114 degrees C and boils at 184 degrees C, what is its physical state at 120…
A: Given: Melting point of Iodine is 114°C . Boiling point of Iodine is 184°C To find: Physical state…
Q: What is umplung? Provide example.
A: Umpolung : Reversal of polarity. For example acetaldehyde is having electrophilic carbon.…
Q: Why rubber,cotton, wax and wood consider deformable materials? explain EACH why
A:
Step by step
Solved in 2 steps
- Molecular oxygen (O2) can be converted to ozone (O3) in the presence of an electrical spark, according to the equation below: 3 O2 (g) -> 2 O3 (g) Which of the statements below best describes this transformation? This is a phase change. This is a physical change. This is a chemical change.You take some water with a straw and put a few drops on a plastic sheet. If you move a drop around with your straw. Does the drop change? If you move one of the drops close to another with your straw. What happens when two drops meet? When you put a small amount of one of the solids (salt, pepper, sugar, talcum powder) on one of the drops. Does the shape change?X 26. In the question above, two liquids react together to form solid. What term is given to this process? Precipitation Effervescence O Clumping Freezing
- 3. Calculate the amount of energy absorbed when 42 g of water at 21°C heats to 94°C. Did a phase change occur? If so, which one? Is this endothermic or exothermic? pearQ2/ The density of a material increases with the increases in bonding forces between its molecules Called this forces *100 mL of water is already in the calorimeter. Use the density of water at 25°C (0.997 g/mL) to determine the mass from the volume and record it in the data table. Mass water: 99.7 | g 3. Mass ice = Mass total = g g
- 10. Fill in the boxes H,SO4 H20к' OH 1. BH3 2. H2O, NaOH KHSO4 heat PBr3 BrHow many grams of water can be cooled from 39 °C to 19 °C by the evaporation of 44 g of water? (The heat of vaporization of water in this temperature range is 2.4 kJ/g. The specific heat of water is 4.18 J/g.K.) Express your answer using two significant figures. m = 196) ΑΣΦ ? g
- The chemical structure of propane (CH, CH,CH,) is shown below. Highlight each atom that is in a methyl group. H H H | | Н—С — С —С — Н H HWhat is the most common way that energy is exchanged with the environment during a chemical reaction? a b Through the creation of water molecules By burning oxygen с Through the production of electricity d By the production or absorption of heat A__ is a device that is designed so that there is no exchange of heat between the system and surroundings. a barometer b calorimeter с chromatograph d spectrophotometerRead the descriptions below of two substances and an experiment on each. Decide whether the result of the experiment tells you the substance is a pure substance or a mixture, if you can. • Sample A is 100. g of a coarse grey powder with a faint unpleasant smell. 15. mg of the powder are put into a very thin tube and heated. The powder begins melting at 66.2 °C. The temperature continues to rise as the powder slowly melts, and the last of the powder becomes liquid at 76.0 °C. Sample B is a solid yellow cube with a total mass of 50.0 g. The cube is put into a beaker filled with 250. mL of water. The cube collapses into a small pile of orange powder at the bottom of the beaker. When this powder is filtered out, dried and weighed, it has a total mass of 29.9 g. If the experiment is repeated with 500. mL of water, the powder that's left over has a mass of 30.0 g. Is sample A made from a pure substance or a mixture? If the description of the substance and the outcome of the experiment isn't…