Atoms

What is an atom?

• Smallest particle of a substance that has all the properties of the substance.

• boiling point

• state

• volume

Tags

NGSS.MS-PS1-1

Which characteristic of a substance will not change?

• appearance

• boiling point

• state

• volume

Melting, boiling, and freezing are examples of

• physical changes

• chemical changes

• magnetic changes

• electrical changes

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The freezing point of water is a

• physical property

• chemical property

• chemical change

• physical change

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

When ice melts, it becomes a

• gas

• solid

• liquid

• plasma

Tags

NGSS.MS-PS1-4

Which state of matter is water at -10 degrees Celsius?

• liquid

• solid

• gas

• vapor

Tags

NGSS.MS-PS1-4

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

Tags

NGSS.MS-PS1-1

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

Tags

NGSS.MS-PS1-1

The separate atoms that make up a wooden table cannot be seen because the atoms are

• too small

• moving too fast

• packed lightly together

• hidden beneath the surface

Which of these is evidence that air is made of particles of matter?

• 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