IS MATTER AROUND US PURE BY SP SINGH

What does the term 'matter around us' refer to in Chemistry?

• The behavior of particles in a vacuum
• Substances that can be touched, seen, and felt
• The study of quantum mechanics
• The properties of elements

What does 'pure' mean in Chemistry?

• Composed of multiple elements
• Composed of a single element
• Composed of multiple compounds
• Composed of a single compound

What is the opposite of 'pure' in Chemistry?

• Homogeneous
• Heterogeneous
• Elementary
• Compound

If a substance consists of only one type of atom, what is it classified as?

• Element
• Compound
• Mixture
• Solution

What is an example of a pure substance?

• Saltwater
• Iron
• Oxygen gas
• Copper wire

What is the characteristic of a pure substance?

• It is made up of multiple elements
• It has a fixed composition
• It can be separated into two or more substances
• It is made up of a single element

What is the difference between a pure substance and a mixture?

• A pure substance can be separated into two or more substances, while a mixture cannot
• A pure substance cannot be separated into two or more substances, while a mixture can
• A pure substance has a fixed composition, while a mixture does not
• A pure substance has a variable composition, while a mixture has a fixed composition

What is a homogeneous mixture?

• A mixture that consists of two or more substances
• A mixture in which the substances are evenly distributed
• A mixture that consists of a single substance
• A mixture in which the substances are not evenly distributed

What is a heterogeneous mixture?

• A mixture that consists of two or more substances
• A mixture in which the substances are evenly distributed
• A mixture that consists of a single substance
• A mixture in which the substances are not evenly distributed

What type of mixture is soil?

• Homogeneous
• Heterogeneous
• Elementary
• Compound