Particles

The smallest possible piece of matter we can have is a ...

Can we see a particle like an atom with a light microscope?

• Yes

• No

Pure substances are composed of...

• one type of particle only

• two types of particles

• three types of particles

• any types of paticles

If these 9 images represent 9 substances, how many mixtures do we have?

Do the particles of a substance move or are they quiet?

• They move only if they are gases

• They move only if they are gases or liquids

• They don't move

• They all move

Which one of these is true?

• An atom is composed of two or more molecules

• A molecule is composed of two or more atoms

• A particle is composed of two or more molecules

• A particle is composed of two or more atoms

Which of these can we compress? (compress = comprimir)

• Solids

• Liquids

• Gases

• We can't compress matter

Which of these preserve their shape?

• Solids

• Liquids

• Gases

When we increase the temperature of a substance, its particles move...

As we know, a pure substance will have specific properties. Which of these are specific properties?

• Density

• Volume

• Melting point

• Mass

• Temperature