Differentiate atoms, molecules, elements, and compounds - Middle School Physical Science

The answer is “an element.” This image is an element because there is only one kind of atom present.

The answer is “an element.” This image is an element because there is only one kind of atom present. Even though the atoms are bonded in molecules, there is still only one kind of atom in the image. Therefore, it could not be a compound or a mixture.

The answer is “a mixture.” In this image we can see at least two types of atoms, so we know there is more than one element. The molecules in this image come in at least two varieties, so there must be at least two different compounds - meaning that this is a mixture.

A molecule is defined as a group of any two atoms. When looking at a substance, this classification can be combined with element, compound, or mixture, but not with "an atom." So you can have a molecule of an element, a molecule of a compound, or several molecules of different varieties which create a mixture.

A molecule is defined as a group of a the same kind of atom. When looking at a substance, this classification can be combined with either atoms or molecules. So you can have either an atom of an element, or molecule of an element- as long as there is only one type of atom present. If there is more than one kind of atom present, then you have either a compound, or a mixture.

Salt is a compound because it has more than one type of element. Na is the chemical symbol for Sodium. and Cl is the chemical symbol for Chlorine. These elements are bonded together to form a compound, Sodium Chloride.

Hydrogen is an element with the atomic number 1. You can find Hydrogen on the periodic table.

A mixture is a group of different atoms or molecules. Mixtures contain several elements that are not bonded together.

Carla's sister made a mixture because these items are different compounds and will not combine chemically. Even though the sugar dissolves into the milk, the solution is not the result of a chemical reaction.

The answer is “a compound.” Compounds are groups of atoms of two or more elements. The image cannot be a single element because there is more than one type of atom present. The image cannot be a mixture because there is only one kind of molecule present. The image cannot be a single molecule because each group of atoms is a molecule.

The answer is “an element.” This image is an element because there is only one kind of atom present.

The answer is “an element.” This image is an element because there is only one kind of atom present. Even though the atoms are bonded in molecules, there is still only one kind of atom in the image. Therefore, it could not be a compound or a mixture.

The answer is “a mixture.” In this image we can see at least two types of atoms, so we know there is more than one element. The molecules in this image come in at least two varieties, so there must be at least two different compounds - meaning that this is a mixture.

A molecule is defined as a group of any two atoms. When looking at a substance, this classification can be combined with element, compound, or mixture, but not with "an atom." So you can have a molecule of an element, a molecule of a compound, or several molecules of different varieties which create a mixture.

A molecule is defined as a group of a the same kind of atom. When looking at a substance, this classification can be combined with either atoms or molecules. So you can have either an atom of an element, or molecule of an element- as long as there is only one type of atom present. If there is more than one kind of atom present, then you have either a compound, or a mixture.

Salt is a compound because it has more than one type of element. Na is the chemical symbol for Sodium. and Cl is the chemical symbol for Chlorine. These elements are bonded together to form a compound, Sodium Chloride.

Hydrogen is an element with the atomic number 1. You can find Hydrogen on the periodic table.

A mixture is a group of different atoms or molecules. Mixtures contain several elements that are not bonded together.

Carla's sister made a mixture because these items are different compounds and will not combine chemically. Even though the sugar dissolves into the milk, the solution is not the result of a chemical reaction.