2.Matter sfp

What is the difference between a homogeneous mixture and a heterogeneous mixture?

• Homogeneous mixtures are made of elements only, while heterogeneous mixtures contain compounds.
• Homogeneous mixtures have a uniform appearance throughout, while heterogeneous mixtures have visibly distinct components.
• Homogeneous mixtures are always liquids, while heterogeneous mixtures can be solids, liquids, or gases.
• Homogeneous mixtures are formed by chemical reactions, while heterogeneous mixtures are formed by physical processes.

Which of the following is NOT a characteristic of a compound?

• Compounds are formed by the chemical bonding of different elements.
• Compounds have a fixed ratio of atoms.
• Compounds can be broken down into simpler substances by physical means.
• Compounds have unique properties that differ from their constituent elements.

What is the primary reason why classifying matter based on its composition is useful?

• It helps to predict the behavior of substances when mixed with other substances.
• It allows scientists to easily identify the elements present in a sample.
• It simplifies the process of separating mixtures into their components.
• It provides a framework for understanding the atomic structure of matter.

Compounds have a fixed ratio of atoms. What does this mean in terms of the chemical formula of a compound?

• The chemical formula can vary depending on the source of the compound.
• The chemical formula represents the exact number of each type of atom in the compound.
• The chemical formula indicates the relative abundance of each element in the compound.
• The chemical formula is determined by the physical state of the compound.

What is the difference between a monatomic element and a diatomic element?

• Monatomic elements are found in nature, while diatomic elements are created in laboratories.
• Monatomic elements exist as single atoms, while diatomic elements consist of two atoms bonded together.
• Monatomic elements are always solids, while diatomic elements can be gases or liquids.
• Monatomic elements are more reactive than diatomic elements.

A group of elements consistently forms diatomic molecules. What is the significance of this characteristic?

• These elements are more stable when bonded to atoms of the same type.
• These elements are more likely to react with other elements.
• These elements are found only in specific environments.
• These elements are essential for life.

What is the key difference between a compound and a mixture?

• Compounds are formed by chemical bonds, while mixtures are formed by physical combinations.
• Compounds have a fixed ratio of atoms, while mixtures can have varying proportions.
• Compounds are always solids, while mixtures can be solids, liquids, or gases.
• Compounds are created in laboratories, while mixtures are found in nature.

The composition of a substance that can be broken down into simpler substances by physical means is a ?

• It is a mixture.
• It is a compound.
• It is an element.
• It is a pure substance.

Compounds have a fixed ratio of atoms. What conclusion can be drawn about the properties of a compound compared to its constituent elements?

• The properties of a compound are identical to those of its constituent elements.
• The properties of a compound are a simple average of the properties of its constituent elements.
• The properties of a compound are entirely different from those of its constituent elements.
• The properties of a compound are only slightly different from those of its constituent elements.

Particle diagrams represent elements, compounds, and mixtures. What do the different colors or patterns in these diagrams tell?

• They represent the different physical states of matter.
• They indicate the relative abundance of each component.
• They symbolize the different types of atoms or molecules present.
• They reflect the chemical bonds between atoms.