What is a substance that cannot be broken down into any other substances by chemical or physical means?

• Element

• Compound

• Molecule

• Mixture

What is the basic particle from which all elements are made.

• Compound

• Molecule

• Atom

• Mixture

What is a group of two or more atoms held together by chemical bonds?

• Compounds

• Element

• Molecule

• Mixture

What is made of two or more different elements that are chemically combined?

• Molecule

• Compound

• Element

• Mixture

What is made of two or more substances that are together in the same place but whose atoms are not chemically combined?

• Molecule

• Mixture

• Element

• Compound

What type of mixture has different parts that can usually be seen and easily separated?

• Homogeneous Mixture

• Heterogeneous Mixture

Which mixture has substances that are so evenly mixed that they cannot be seen and are difficult to separate.

• Homogenous Mixture

• Heterogenous Mixture

Oxygen (O) is an example of what?

• Compound

• Element

• Molecule

What is Carbon Dioxide ( CO₂ ) is an example of?

• Molecule

• Element

• Compound

What is Neon ( Ne ) an example of?

• Element

• Molecule

• Compound