Which of the following best describes the arrangement of particles in a gas?
The particles in a gas are free to move and are not bound together. They are constantly in random motion, colliding with each other and the walls of the container.
The best description of the arrangement of particles in a gas is that they are constantly moving and widely spaced apart.
To determine the arrangement of particles in a gas, we need to understand the nature of gases. Gases are composed of particles (atoms, molecules) that are in constant random motion.
The options are:
1. Tightly packed - This implies that the gas particles are closely arranged and occupy a fixed position. However, this contradicts the behavior of gas particles, which are highly mobile and not restricted to any specific arrangement.
2. Arranged in a regular pattern - This suggests an ordered alignment of gas particles, but gases do not exhibit a regular pattern or crystal lattice structure like solids. In gases, particles move randomly and frequently collide with each other.
3. Randomly distributed - This option accurately represents the behavior of gas particles. In a gas, the particles have a random distribution since they move freely and independently throughout the available space.
Therefore, the correct answer is "Randomly distributed."
At a fair or circus, some performers and clowns take long balloons and fold them into animals and objects as toys for children. Which statement explains why the balloon can fold, twist, and bend without bursting?
The statement that explains why the balloon can fold, twist, and bend without bursting is that the balloon is made of a stretchable material, such as latex or rubber. This stretchable material allows the balloon to expand and contract as it is manipulated into various shapes, without reaching its breaking point.
Properties of Matter Unit Test
5 of 95 of 9 Items
Question
Which best defines color?(1 point)
Responses
a physical property of matter related to how a material interacts with different wavelengths of light
a physical property of matter related to how a material interacts with different wavelengths of light
a physical property of matter related to a material’s ability to reflect light
a physical property of matter related to a material’s ability to reflect light
a chemical property of matter related to a material’s ability to reflect light
a chemical property of matter related to a material’s ability to reflect light
a chemical property of matter related to how a material interacts with different wavelengths of light
The correct answer is:
a physical property of matter related to how a material interacts with different wavelengths of light
What is the melting point of a substance?
The melting point of a substance is the temperature at which it changes from a solid state to a liquid state at constant pressure. It is the temperature at which the intermolecular forces holding the particles together in the solid become weak enough to allow them to move freely, leading to a change in physical state.
Question
Which of the following are solvents? Select the two correct answers. (1 point)