Classification of matter worksheet answer key chemistry
What is matter and classification of matter?
Matter can be classified according to physical and chemical properties. Matter is anything that occupies space and has mass. The three states of matter are solid, liquid, and gas. A physical change involves the conversion of a substance from one state of matter to another, without changing its chemical composition.
Is sugar and pure water a homogeneous mixture?
The sugar-water is a homogenous mixture while the sand-water is a heterogeneous mixture. Both are mixtures, but only the sugar-water can also be called a solution.
How do atoms combine to make different types of matter?
All chemical bonding is due to electrostatic attraction. When atoms combine through chemical bonding, they form compounds—unique structures composed of two or more atoms. The basic composition of a compound can be indicated using a chemical formula.
Is Pepsi a mixture or pure substance?
Soft drinks contain water, sugar, flavoring, coloring, and carbon dioxide gas. Soft drinks in sealed bottles are examples of homogeneous mixtures.
Is blood pure or a mixture?
mixture
Blood is not a pure substance. Blood is made up of many different components like cells, salts, proteins, water, etc. It’s not just one type of molecule or element, so it is a mixture.
Is air a mixture or pure substance?
mixture
Air is a mixture and not a compound because air can be separated into its constituents such as oxygen, nitrogen etc. by fractional distillation of liquid air. Air shows the properties of all the gases present in it.
Is toothpaste a mixture?
Toothpaste is a mixture of powdered solids and various liquids, so it’s neither a liquid nor a solid. Chemists would argue that toothpaste is a colloid (like milk or ink): a mixture where tiny particles of one substance are dispersed evenly into another without separating out.
Is water a pure substance?
Water, H2O, is a pure substance, a compound made of hydrogen and oxygen. Although water is the most abundant substance on earth, it is rarely found naturally in its pure form. Most of the time, pure water has to be created.
Is tap water a pure substance?
Tap water is a mixture of water and dissolved impurities hence, it is not a pure substance.
Why is water and sugar homogeneous mixture?
Complete answer:
In the given options, the sugar water is made up of two components that is sugar which is dissolved in water so the resulting solution after mixing these two will be a clear solution which is absolutely a homogeneous solution. Hence it is a homogeneous mixture.
Is sugar and pure water a mixture or compound?
Material
| Material | Pure Substance or Mixture | Element, Compound, Homogeneous, Heterogeneous |
|---|---|---|
| sugar + pure water (C12H22O11 + H2O) | Mixture | Compound |
| iron filings (Fe) | Pure Substance | Element |
| limestone (CaCO3) | Pure Substance | Element |
| orange juice (w/pulp) | Mixture | Heterogeneous |
Why mixture of sugar and water is a homogeneous mixture?
So, is sugar water homogeneous or heterogeneous? Sugar water is a homogeneous mixture as sugar completely dissolves in water, and we cannot distinguish between solid and liquid phases. The sugar molecules uniformly get mixed with water molecules forming a homogeneous mixture.
Is sugar dissolved in water a pure substance or a mixture?
Dissolving the sugar in the water makes a homogenous mixture and once dissolved a solution is made by the combination of a solute (sugar) and solvent (water).
What is the difference between homogeneous and heterogeneous?
In most technical applications homogeneous means that the properties of a system are the uniform throughout the entire system; heterogeneous (also inhomogeneous) means that the properties change within the system. Any system with two phases like ice and water are said to be heterogeneous.
Is air a mixture?
Air is a mixture and not a compound because of the following reasons: Air can be separated into its constituents such as oxygen, nitrogen etc. by fractional distillation of liquid air. Air shows the properties of all the gases present in it.