An element is thế simallest part of å substance a macle of difierent kinds of åtömis pure substance. anytningi that has mass and takes up space a pure substance mace of ony phe king ôilalom

Q: Here are the four sketches os pure substances.each sketch is drawn as if a sample of rhe substance…

A: Given diagram is :  There are the four sketches of pure substances .each sketch is drawn as if a…

Q: Question 14 Which of the following statements about energy is false? O Energy cannot be converted…

A: Energy cannot be converted from one form into another

Q: Disungdishing chemical and physical change There &r sketches below. The first sketch shows a sample…

A:

Q: Classify these substances. More than one answer may apply in each case. N2 solution O homogeneous…

A: Element - It is a pure substance made up of only a single atom.  Compound - It is a pure substance…

Q: Question 7 Which pure substance below is composed of more than one element? O Hydrogen (H) O Radium…

A:

Q: Which of the following is classified correctly? 24 Karat gold is a homogeneous mixture. Graphite is…

A: 24 karat gold is means pure gold no any other metal are mixed with gold that means 24 karat gold is…

Q: A beaker containing a green liquid is left uncovered in a laboratory for one week., After the liquid…

A: Mixture is a combination of two or more different chemical substances that are not combined…

Q: classify to be solid, liquid or gas     Particles are close together but are not held rigidly…

A: To identify whether the given statement represents solid, liquid or gas.

Q: A white powder mixture is placed into water. Some of the powder sinks to the bottom of the…

A: A mixture containing different phases and the composition is not uniformed throughout is termed as…

Q: water. The Earth's surface is covered mostly with O salty O fresh O frozen O pure

A: Water is the most abundant constituent of the earth surface.

Q: The particles in a substance are moving and sliding past each other, but they are still in contact.…

A: This question is related to state of matter. Matter exist in three phases: Solid, Liquid and Gas.

Q: You made a 36.6 g sample of a compound made of carbon and oxygen. You know that 10.0 g of carbon…

A: Number of moles = Mass/Molar mass

Q: Classify these substances. More than one answer may apply in each case. H, pure substance element…

A:

Q: n a table according to their chemical and physical properties. The goal is to display as many…

A: A question based on periodic trends that is to be accomplished.

Q: In these diagrams, different atoms are represented by different colors. Classify each sample…

A: Let us give number to the sample diagrams (1-10) from left to right with respect to rows. 1      2…

Q: If you have 100 particles of hydrogen and 100 particlesof oxygen, how many units of water can you…

A: Limiting reagent It is the reagent that is completely consumed in a reaction. It determine the…

Q: The scenes below represent atomic-scale views of three samples of matter: Describe each sample as an…

A: Matters are the substances that are made up of very small particles and are not able to seen by…

Q: Vhich statement about pure substances and molecules is correct? Molecules cannot be pure substances.…

A: molecules are made up of two or more atoms combining in a specific ratio. Pure substances are those…

Q: Melting gold with other metals makes 10-karat gold. Which term best describes 10-karat gold? O…

A: 10 karat gold is an alloy . Alloy are the homogeneous mixture.

Q: Write true for the correct statements and false for the A physical change is a change in the…

A: A set of true or false questions based general chemistry, which are to be accomplished.

Q: Classify these substances. More than one answer may apply in each case. H2 O, pure substance element…

A: Given substances are : a). H2  b). O2  c). H2O  d). Salt water  They are pure substances or element…

Q: Sugar is a compound made of the elements carbon, hydrogen, and oxygen. If you add sugar to water,…

A: In this question, we have to distinguish between compound and mixture.

Q: Air consists of mainly N₂ and O2, plus CO2 and other impurities. Air is classified as a pure element…

A: A homogeneous mixture is a mixture where all the components are in same phase, and are mixed evenly,…

Q: Which of the statements below are true of the substance represented in the diagram?

A: Among solid, liquid, and gas, the arrangement of atoms are different. The particles in a solid are…

Q: Brass is a combination of copper and zinc metals. How would you classify brass? Element O…

A: Alloys are the compounds which are made up of two or more metals. The property of a metal can be…

Q: Form X Form Z foms of the same substance, form X and lom 2, that ditter in the aran

A: The density is the relationship between the mass of the substance and volume. It is a measure of…

Q: Select the property that is a characteristic of the group 14 (4A) element carbon. O it forms…

A: Group 14 consists of the following elements: Carbon, C Silicon, Si Germanium, Ge Tin, Sn Lead, Pb

Q: 9. Determine if each of the following sketches is showing a pure sample of an element or a pure…

A: Element consist of only one type of atoms. Compound consists of identical molecules. Each molecule…

Q: A student determines that 4 clinks weighs 15.45 g and 7 clacks weighs 14.11 g. What is the relative…

A: Solution -

Q: Which of the following are extensive properties? Choose all that apply. Mass O Density O Volume…

A: In thermodynamics, two types of properties present- 1)Intensive property 2)Extensive property

Q: Combining hydrogen gas and oxygen gas to form water is a O chemical change. O physical change.…

A: Combination of H2(g) & O2(g) is which type of reaction ??

Q: The tap water found in many areas of the United States leaveswhite deposits when it evaporates. Is…

A:

Q: The behavior of matter is determined by the properties of molecules and atoms. True or false?

A: Everything surrounding the molecule is a matter. It is made up of atoms and molecules. It has mass…

Q: Element Compound Heterogeneous mixture Homogeneous mixture охуgen carbon dioxide Answer Bank a…

A: Classification of compund element etc

Q: 1. Which of the following is NOT a pure element Nitrogen Carbon Dioxide

A: Pure substances :- Pure substances consist of single type of particles. Pure substances can be…

Q: Molecules can be described as O heterogeneous mixtures. O homogeneous mixtures. two or more atoms…

A: (1)The statements that do not describe molecules are given below:Mixtures of two or more pure…

Q: You must show calculations in the space pr receive credit. he line to 1. The following data was…

A: Given, Mass of crucible = 24.525g. Mass of crucible and mixture = 26.716g. Mass of crucible and…

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: Fact, Law, Hypothesis, or Theory? __ An object less dense than the air flies up on its own. __…

A: Factt: It is known or proved to be true. Law: A scientific law is the description of an observed…

Q: Gas chromatography is an analytical technique that is used to separate and analyze samples that can…

A: Gas chromatography is one of the analytical technique that is used for the separation of compounds.…

Q: What can you say about this sketch of substance(s)? Hint: Yellow₁ Red₁ is different from Yellow₁…

A: The objective of the question is to predict the given sketch.An element is a chemical substance that…

Q: What is a form of matter that is chemically pure and cannot be physically separated

A: To identify: A form of matter that is chemically pure and cannot be physically separated.

Q: Decide whether each sketch shows a pure sample of an element or a pure sample of a compound. R…

A: Compounds are species that are formed by bonding chemically with two or more elements of the…

Q: A 788g sample of water at boiling point 100  Celsius is boiled completely. How much energy was…

A: Latent heat of vapourisation  It is defined as physical property of substance to change one mole of…

Q: Write a complete chemical formula, including physical state symbol, for each element listed below in…

A: Standard state of any substance/element is defined as the reference point from which various…

Q: Which of the following statements is FALSE? O The mass percentage of calcium in calcium phosphate is…

A: Answer - The False statement is (e) and (a) The mass percentage of calcium in calcium phosphate is…