Classifying Matter: Elements, Compounds, and Mixtures

What is a key characteristic of a mixture?

• It is composed of identical particles.

• It can be described by a single chemical formula.

• It cannot be separated physically.

• It contains particles that look different from one another.

How can mixtures be separated?

• By chemical means only.

• By physical means.

• They cannot be separated.

• By using a single chemical formula.

What happens to a mixture after it is sorted into individual piles?

• It remains a mixture.

• It becomes a compound.

• It becomes groups of pure substances.

• It becomes an element.

What distinguishes pure substances in the context of the video?

• They are made of different types of atoms.

• They are made of identical particles.

• They cannot be separated physically.

• They are always in the form of elements.

What characterizes a compound?

• It is made of only one type of atom.

• It is made of more than one type of atom.

• It is always in the form of a mixture.

• It cannot be chemically separated.

Tags

NGSS.MS-PS1-1

Which of the following is an example of a compound?

• A pile of B atoms.

• A single type of atom.

• A pile of PU atoms.

• PU y2 molecules.

Tags

NGSS.MS-PS1-1

What characterizes an element?

• It is made up of different types of atoms.

• It can be chemically separated.

• It is made up of the same type of atom.

• It is always in the form of a compound.

Which of the following is true about elements?

• They can be chemically separated.

• They are made of the same type of atom.

• They are always in the form of mixtures.

• They are made of more than one type of atom.

What distinguishes elements from compounds?

• Elements can be chemically separated.

• Compounds cannot be chemically separated.

• Compounds can be chemically separated.

• Elements are made of more than one type of atom.

What is a chemical separation?

• Breaking physical bonds to form new substances.

• Breaking chemical bonds to form new substances.

• Combining elements to form compounds.

• Separating mixtures physically.