Which of the following properties is a chemical property?(1 point)
Responses
magnetism
magnetism
flammability
flammability
hardness
hardness
melting point
melting point
Which of the following substances is a compound?(1 point)
Responses
oxygen (O)
oxygen (O)
carbon (C)
carbon (C)
water (H2
O)
water (H2O)
gold (Au)
water (H2O)
Which of the following substances is an element?(1 point)
Responses
protein
protein
salt
salt
insulin
insulin
hydrogen
hydrogen
Which of these properties is a chemical property?(1 point)
Responses
melting point
melting point
flammability
flammability
hardness
hardness
magnetism
flammability
The chemical formula for methane is CH 4
. What is the fixed ratio of carbon (C) to hydrogen (H)?(1 point)
Responses
1:1
1:1
1:4
1:4
4:5
4:5
1:5
1:4
To determine which of the listed properties is a chemical property, we need to understand what chemical properties are. Chemical properties describe how a substance interacts with other substances, leading to changes in its chemical composition. These properties can only be observed when a substance undergoes a chemical change or reaction.
From the given options, "flammability" is the only property that represents a chemical property. Flammability describes the ability of a substance to burn or combust when exposed to a flame or ignition source. It involves a chemical reaction between the substance and oxygen, resulting in the release of heat, light, and gases.
On the other hand, "magnetism," "hardness," and "melting point" are not chemical properties. Magnetism is a physical property, as it relates to the behavior of certain materials in the presence of a magnetic field. Hardness is also a physical property and refers to the ability of a substance to resist deformation or scratching. Melting point is the temperature at which a solid substance changes into a liquid state and is considered a physical property.
Therefore, out of the options provided, "flammability" is the only property that represents a chemical property.