Q1_Elements, Compounds, and Solutions

What is a pure substance?

• A mixture of different substances

• Matter with distinct properties and fixed chemical compositions

• A substance that can be easily decomposed

• A gas that cannot be classified

Which of the following is an example of a mixture?

• Salt Water

• Oxygen

• Gold

• Baking Soda

What is the simplest form of matter?

• Mixture

• Element

• Solution

• Compound

Which of the following elements is a metal?

• Oxygen

• Carbon

• Iron

• Bromine

What is the chemical symbol for Gold?

• Au

• Pb

• Ag

• Fe

Which of the following is a characteristic of nonmetals?

• High melting points

• Brittle

• Good conductors of heat

• Malleable

What type of compound contains carbon and hydrogen?

• Organic

• Inorganic

• Covalent

• Ionic

Which element is most abundant in the Earth's crust?

• Calcium

• Iron

• Silicon

• Oxygen

What is the primary function of Calcium in the human body?

• Building strong bones and teeth

• Regulating heartbeat

• Maintaining fluid balance

• Producing energy

Which of the following is a property of metals?

• Poor conductors of electricity

• High density

• Brittle

• Low melting points