Understanding Atoms and Elements

What are all things in the universe made from?

• Countless types of particles

• Various types of cells

• 92 different kinds of atoms

• Different kinds of molecules

Why can't we see atoms with our eyes?

• They are too small

• They are transparent

• They are hidden inside substances

• They are always in motion

How are different atoms represented in the video?

• By different sounds

• By different sizes

• By different colors and letters

• By different shapes

Which atom is represented by the color orange?

• Hydrogen

• Carbon

• Oxygen

• Copper

What happens when atoms are separated into piles?

• They form substances with distinct characteristics

• They lose their properties

• They become invisible

• They form new compounds

What is a collection of hydrogen atoms known to form?

• A black solid

• A colorless gas

• A shiny grey solid

• A shiny orange solid

What is the definition of an element?

• A compound of various molecules

• A mixture of different substances

• A substance made of only one kind of atom

• A substance made of multiple kinds of atoms

Which substance on the desk was already an element?

• Glass

• Wood

• Copper

• Water

How many different kinds of atoms make up the universe?

• 75

• 50

• 100

• 92

What is the significance of the number 92 in the context of the universe?

• It is the number of known elements

• It is the number of galaxies

• It represents the number of planets

• It is the number of different kinds of atoms