Which one of the following statements best supports the idea that matter is made up of particles? Metals expand when heated. if a bottle of perfume is opened, the smell spreads quickly. Water always fills the space available to it. Gases are usually lighter than liquids. Which of the following is NOT a property of a compound? It can be broken down into simpler substances. It consists of multiple phases. It has definite temperature. It has a uniform appearance.
Which one of the following statements best supports the idea that matter is made up of particles? Metals expand when heated. if a bottle of perfume is opened, the smell spreads quickly. Water always fills the space available to it. Gases are usually lighter than liquids. Which of the following is NOT a property of a compound? It can be broken down into simpler substances. It consists of multiple phases. It has definite temperature. It has a uniform appearance.
Which one of the following statements best supports the idea that matter is made up of particles? Metals expand when heated. if a bottle of perfume is opened, the smell spreads quickly. Water always fills the space available to it. Gases are usually lighter than liquids. Which of the following is NOT a property of a compound? It can be broken down into simpler substances. It consists of multiple phases. It has definite temperature. It has a uniform appearance.
Direction: Encircle the statement/word which you think gives the correct answer to the question.
Which one of the following statements best supports the idea that matter is made up of particles?
Metals expand when heated.
if a bottle of perfume is opened, the smell spreads quickly.
Water always fills the space available to it.
Gases are usually lighter than liquids.
Which of the following is NOT a property of a compound?
It can be broken down into simpler substances.
It consists of multiple phases.
It has definite temperature.
It has a uniform appearance.
Water behaves like most other molecules in all ways, except that ________.
It interacts strongly with other water molecules.
It can exist as a solid, liquid, or gas.
Its temperature correlates with how rapidly its molecules are moving.
Water in an open container is absorbed by the container, disappears, changes into air, or dries up, and goes into the air.
4.Which of the following provides evidence that air is a mixture?
Living organisms breathe in oxygen.
Nitrogen and oxygen are both gases.
Substances burn in the presence of air.
Air can be physically separated into several components.
5.Which of the following statements is NOT correct about atoms and molecules in matter?
They are attracted to one another.
They constantly move.
Matter can disappear.
They move faster as temperature increases.
You observed that there are puddles of water in the bath room floor. After a few minutes, it dries up due to warm temperature. What happened to the water?
It just dried up into nothing.
It seeped into gaps between tiles.
It turned into water vapor and blends with the air.
It split up into hydrogen and oxygen atoms which can then blend with the air.
If a balloon is blown up in a warm room and then places in a refrigerator overnight, what will probably happen to the balloon?
It will completely deflate.
It will become slightly larger.
It will remain the same size.
It will become slightly smaller.
Which of the following statements is NOT in agreement with the particulate nature of matter?
The particles of all matter are always in motion.
All matter is composed of small particles.
Among solids, liquids, and gases, particles are hardest in solids.
Among solids, liquids, and gases, particles are spaced farthest apart in gases.
A pot of water is placed on a hot stove. Small bubbles begin to appear at the bottom of the pot. The bubbles rise to the surface of the water and seem to pop or disappear. Which of the following is NOT true when water is heated?
Steam is hot air.
The molecules move faster.
More liquid molecules are vaporized
The kinetic energy of molecules increased.
Ice floats on water. Which of the statements most correctly describes this observation?
Ice is denser than liquid water.
Ice is less dense than liquid water.
Ice is not soluble in liquid.
Ice is colder than liquid water.
Water is essential in the body. It behaves like most other molecules in all ways. Which characteristics best describes the physical change of water?
Composition changes.
Composition remains the same.
It will produce a new substance.
Mass is lost.
A compound cannot be separated into other substances by physical methods, and the elements in it are always combined in fixed proportions of atoms that are held together by chemical bonds. Which of the following substances does not belong to the group?
calcium c. ammonia
iodized salt d. glucose
Definition Definition Connection between particles in a compound. Chemical bonds are the forces that hold the particles of a compound together. The stability of a chemical compound greatly depends on the nature and strength of the chemical bonding present in it. As the strength of the chemical bonding increases the stability of the compound also increases.
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