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Substances made up of two or more different molecules are called compounds. An Ionic compound is made up of a non metal and a metal while a covalent compound is made up of a non metal and another non metal. There is no such thing as a compound composed of a metal and a metal.
A substance made of 2 or more different molecules is called a mixture. Mixtures can be homogeneous, where the molecules are evenly distributed (like salt water), or heterogeneous, where the molecules are unevenly distributed (like a trail mix).
If a substance contains two different molecules, we call it a Compound. Water, for example, is a compound because it contains Hydrogen atoms and an Oxygen atom.
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What substance is a mixture of molecules?
A substance that is a mixture of molecules is called a compound. Compounds are composed of two or more different types of atoms bonded together in specific ratios. Examples of compounds include water (H2O) and carbon dioxide (CO2).
Distinguish between a molecule and compound?
A molecule is the smallest unit of a chemical substance that retains its chemical properties, consisting of two or more atoms held together by chemical bonds. A compound is a substance composed of two or more different elements chemically bonded together in fixed proportions. In essence, all compounds are molecules, but not all molecules are compounds.
What term refers to a molecule that is made up of two or different elements?
A molecule made up of two or more different elements is called a compound, whereas a molecule made up of two of the same elements is still just an element.
What will happen when atom and molecules of substance melt freeze boil or condense?
When a substance melts, the molecules move more freely and when it freezes, they move more slowly. When a substance boils and becomes a vapor (gas), the molecules again move faster than when in the liquid state, and when the vapor condenses, the molecules move slower.
How do you know when you made a compound?
You know you have made a compound when two or more elements or molecules chemically bond together to form a new substance with unique properties different from the original elements or molecules. Characteristics such as a fixed ratio of constituent elements and distinct physical and chemical properties can also indicate the formation of a compound.
What substance is a mixture of molecules?
A substance that is a mixture of molecules is called a compound. Compounds are composed of two or more different types of atoms bonded together in specific ratios. Examples of compounds include water (H2O) and carbon dioxide (CO2).
What is the difference beteween molecule and compound?
A molecule is the smallest unit of a substance that retains all the properties of that substance, while a compound is a substance made up of two or more different elements chemically bonded together. All compounds are molecules, but not all molecules are compounds.
How are compounds and molecules different?
Compounds are substances composed of two or more different elements chemically bonded together. Molecules, on the other hand, are the smallest unit of a compound that retains the chemical properties of that compound. Not all molecules are compounds, but all compounds are made up of molecules.
Why do liquids have different density?
Different liquids have different densities because of variations in the mass of their molecules and the distance between them. Density is the amount of mass a substance has in a specific volume, so liquids with heavier molecules or more closely packed molecules will have a higher density than those with lighter molecules or more spread-out molecules.
Distinguish between a molecule and compound?
A molecule is the smallest unit of a chemical substance that retains its chemical properties, consisting of two or more atoms held together by chemical bonds. A compound is a substance composed of two or more different elements chemically bonded together in fixed proportions. In essence, all compounds are molecules, but not all molecules are compounds.
Why is yogurt not a pure substance?
Yogurt is not a pure substance because its a mixture of different elements/molecules (Cow milk and sugar and more...) from the Periodic Table
How is compound different then molecules?
A compound is a substance composed of two or more different types of atoms chemically bonded together, while a molecule is the smallest unit of a compound that retains the chemical properties of that compound. All compounds are molecules, but not all molecules are compounds.
Why is sugar considered as a pure substance?
because it consists of only one type of molecule and physically sugar can not be separated into two or more components.
Is a substance made of two or more elements chemically combined?
CompoundThis is called a compound. The molecules of compounds usually have different properties than the atoms of the constituent elements.
Is salt water made of 1 or more molecules?
Salt water is made of multiple molecules. It consists of water molecules and dissolved salt molecules.
Does the amount of heat in a substance depend on the motion of the molecules?
Yes, the amount of heat in a substance is related to the motion of its molecules. Heat is a form of energy that corresponds to the motion of molecules within a substance. The more heat a substance has, the faster its molecules move.
What cause kinetic energy to increase?
Temperature is a number that is related to the average kinetic energy of the molecules of a substance. If temperature is measured in Kelvin degrees, then this number is directly proportional to the average kinetic energy of the molecules. This differentiates it from *heat,* a different term, which is a measurement of the total energy in a substance. That total energy is made up of not only of the kinetic energies of the molecules of the substance, but total energy is also made up of the potential energies of the molecules. As temperature increases, kinetic energy increases (which makes sense, if you're putting more energy into a system, you're probably going to have more total energy).
