States of Matter
These particles are packed tightly together in a fixed shape.
What is a solid?
This type of property can be observed without changing the substance into something new.
What is a physical property?
Tearing a piece of paper is an example of this type of change, because no new substance is formed.
What is a physical change?
Matter is classified as pure substances and mixtures. Elements and compounds both fall under this broader category.
What are pure substances?
This is a combination of two or more substances where each substance keeps its own properties.
What is a mixture?
This state of matter has a definite volume but no definite shape.
What is a liquid?
Flammability and reactivity are examples of this type of property that describes how a substance can change into a new substance.
What is a chemical property?
Rust forming on iron is an example of this type of change that involves the reaction of a metal with oxygen.
What is a chemical change?
Oxygen, gold, and iron are all examples of this type of substance that appears on the periodic table.
What is an element?
A salad, trail mix, or sand and iron filings are examples of this type of mixture, where the components are not evenly distributed.
What is a heterogeneous mixture?
This state of matter spreads out to completely fill its container.
What is a gas?
Steel is a mixture made mostly of iron and carbon. Pure iron melts at about 1538°C, but steel melts over a range of temperatures depending on its composition.
Why do different samples of steel melt at different temperatures?
Ⓐ The samples are made from different sizes of iron crystals.
Ⓑ The samples are composed of different proportions of iron and carbon.
Ⓒ The samples are heated at different rates.
Ⓓ The samples are stored at different room temperatures.
B
A color change, production of gas, or formation of a precipitate are all possible signs of this type of change.
What is a chemical change?
Water, carbon dioxide, and sodium chloride are all examples of this type of pure substance made from two or more elements chemically combined.
What is a compound?
Salt dissolved in water forms this type of mixture, also known as a solution, where the components are evenly distributed.
What is a homogeneous mixture?
Evaporation is when this state of matter changes into a gas.
What is a liquid?
Can the components of a pure substance be separated by physical means? Why or why not?
No because because they are either an element or a compound where the components are held together by strong chemical bonds.
If you dip blue litmus paper into a liquid and it turns red, is the liquid an acid or a base?
Acid
This simplest form of matter cannot be broken down into smaller substances by chemical means.
What is an element?
What are the two types of pure substances?
Element and Compound
This state of matter is made of charged particles with very high energy, often found in lighting.
What is plasma?
Has a constant melting point, freezing point and boiing point.
Pure substance
Mixture or pure substance?
1) Pure
2) Mixture
3)Mixture
4) Mixture
5) Pure
6)Pure
This type of pure substance can be broken down into simpler substances by chemical means, but not by physical means.
What is a compound?
Difference between a mixture and a pure substance
A pure substance is composed of only one type of element or compound, has a fixed composition, and consistent properties that cannot be separated by physical means. A mixture is a physical blend of two or more pure substances