. A chemist mixes sodium with water and witnesses a violentreaction between the two substances. This is best classified as a(n):a) observationb) lawc) hypothesisd) theory

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

A: correct answer is C. either an element or a compound

Q: What is the definition of a physical property? What is thedefinition of a chemical property?

A: answer is discussed below :

Q: When oil and water are mixed together they form a (an) a. Homogeneous mixture b.…

A: When oil and water are mixed together, they form a Heterogeneous mixture. Heterogeneous mixtures are…

Q: What is the definition of matter

A: What is the definition of matter

Q: What mass of sodium chloride and what volume of water a.

A: The mass percentage of any substance is given by the formula below. Mass percent=Mass of the…

Q: classify whether it is greater than, less than, or equal

A: Since you have posted multiple questions, the answer for first question is given below. Kindly…

Q: Why are gases compressible?

A: The reason for gases are compressible has to be given.

Q: Illustrate the characteristic properties of the states of matter?

A: The characteristic properties of the states of matter has to be illustrated below.

Q: wchich of the following terms descibes what a doctor formswhen treating patients prior to ordering…

A: A question based on tools in analytical chemistry that is to be accomplished.

Q: The state of matter that has no definite volume or shape is

A: Answer : Gas Explanation : Gas has no definite volume or shape. Because gas molecules has less…

Q: Two samples of solids have similar reactivity with acids and similar densities. Their masses and…

A: Extensive properties are the ones whose value depend on the size of the system like mass , volume…

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: The volume keeeps saying it's incorrect

A: From given  Volume is calculated as follows

Q: Describe the scientific approach to knowledge. How does it differ from other approaches?

A: A Scientific approach to knowledge is a way of learning that is based on observations and…

Q: Which of the following terms describes what a doctor forms when treating patients prior to ordering…

A: Experiment is the term required for the treatment of the patient by the doctor with the normal…

Q: You observe that sugar dissolves more quickly in hot teathan in iced tea. You state that higher…

A: An unexplained situation for whom a solution is suggested that is not acceptable by a scientific…

Q: olecule in units

A: Dear student I have given answer to your question in the image format.

Q: he volume (in L

A:

Q: Which is an example of a physical change?

A: Physical change can be defined as the change in the physical form of the substance without any…

Q: “Properties are not affected by changes in temperature and pressure.” Is this statement true or…

A: Properties are the attributes and features which that are differs one or more substances from each…

Q: Observed increases in global temperatures are caused byelevated levels of carbon dioxide. Is this…

A:

Q: According to one theory, the pressure of a gas increases as its volume decreases because the…

A: Answer:-               Anything which is large enough to be observed with naked eyes is termed as…

Q: Is gas escaping from an opened soft drink anexample of a chemical or a physical change? Explain.

A: In physical change there are no new substance created. Easy physical techniques may be used to…

Q: Fossils show that humans have existed

A: By studying the fossil record we can tell how long life has existed on Earth, and how different…

Q: of diagrams (a

A:

Q: Classify each change as physical or chemical. (a) A balloon filled with hydrogen gas explodes upon…

A: Given statements are : (a) A balloon filled with hydrogen gas explodes upon contactwith a spark.(b)…

Q: How is chemistry in our everyday life’s ?

A: The human beings survived by the chemical process includes, respiration, digestion, reproduction…

Q: Describe the difference between a theory and a scientific law.

A: We usually come across different theories in the course of study and the scientific laws as well.…

Q: he pieces of paper when the pen is moved closer to it?

A: This is a multipart question. According to guidelines in multi parts questions, we can solve only…

Q: Magnesium metal, a gray solid, is heated in a crucible in the presence A white powder is collected…

A: Given reaction information,    Magnesium metal, a gray solid, is heated in a crucible in the…

Q: Which of the following is NOTA chemical change? O a. bicycle rusting O b. antacid neutralizes…

A:

Q: a) Define melting point. b) Is melting point a physical or chemical property of matter?

A:

Q: Which of the following is based upon repeatable data and is no longer tentative? -Theory…

A: Which of the following is based upon repeatable data and is no longer tentative? -Theory -Scientific…

Q: A) gas B) solid C) liquid D) salts E) ice

A:

Q: When large pieces of a purple-black crystalline solid are gently heated, a purple vapor is formed…

A: Solution : Change is defined as the process that shows the change in state, shape, color, shape,…

Q: emalt temperature of 0°C equal to in Kelvin?

A: Temperature definition :    With the reference of standard value, measuring the warmth and coldness…

Q: Compare the density of solids and gases. Support your answer by describing the arrangement of…

A: Solids: Solids are materials having an ordered arrangement of particles. These particles have very…

Q: Part A When iron rusts, solid iron reacts with gaseous oxygen to form solid iron(lII) oxide. Enter a…

A: The balanced chemical reaction has to be given.

Q: To separate the salt & water, a physical change was used. To separate the hydrogen & oxygen a…

A: Solution :      Physical change can be reversible but chemical change can not some exceptions are…

Q: Which change can be easily reversed? O Chemical Change O Physical Change O Both a physical and…

A: A physical change happens when a compound undergoes changes in physical properties like color…

Q: Include states of matter

A: Balnced chemical reaction in basic medium is

Q: Define physical property and provide examples.

A: The characteristics of a substance can be identified using physical or chemical properties. When the…

Q: Steps in mostly used in the content area you are assigned. Scientific method is a systematic process…

A: Ans. Steps in Scientific Method mostly used in the area of Chemistry: When conducting research,…

Introduction to chemistry

Chemistry is a branch of science that deals with the analysis of material and the substances that comprise it. It also manages the properties of these substances and their reactions to form new substances. It is basically centered on particles and atoms that make up components and mixtures. These chemical species will in general connect using bonds.