Atoms

What is an atom?

Which characteristic of a substance will not change?

• appearance
• boiling point
• state
• volume

Melting, boiling, and freezing are examples of

The freezing point of water is a

When ice melts, it becomes a:

gas

solid

liquid

plasma

State of matter of water at -10 degrees Celsius?

Which list contains only objects made up of atoms?

• steel, water, sand, dolphin
• light, rock, apple, squirrel
• palm tree, electricity, salt, air
• paper, vinegar, heat, helium

Which of these describes a property of all matter?

• all matter gives off light
• all matter is attracted by magnets
• all matter is made of atoms
• all matter dissolves in water

Why can't the separate atoms that make up a wooden table be seen?

Which of these is evidence that air is made of particles of matter? Options: you can feel wind against your face, you can see through the atmosphere into space, on a hot day, the air feels warmer than water in a lake, when you drop a heavy object in the air, it falls until it hits a hard surface