Properties of Matter

Which of these choices is a physical property that does not change when the size of the sample changes?

• mass
• volume
• density
• flammability

Hydrogen gas (H₂) can be found in trace amounts in Earth's atmosphere. Which of these statements describes a physical property of hydrogen?

• Hydrogen is found in acids.
• Hydrogen gas is highly flammable.
• Hydrogen reacts with oxygen to form water. 
• Hydrogen gas is less dense than oxygen gas.

Which of these is a chemical property of a sheet of paper?

• The paper can be burned.
• The paper can be crumpled.
• The paper does not attract a magnet.
• The paper does not conduct electricity.

There are for objects that made of the same metal. Which of these physical properties is not similar in all four objects?

• mass
• magnetism
• specific heat
• eletrical conductivity

Which of these statements describes a chemical property of an object?

• The object in white in color.
• The object has a powdery texture.
• The object's density is 2.11 g/cm³.
• The object reacts with acid to form water.