Matter and Atoms

A sample of matter is made of identical particles. The sample could be

• a molecule.

• an atom.

• an element.

• a mixture.

Tags

NGSS.MS-PS1-1

Which is true for every atom of an element?

• It can be seen with a magnifying glass.

• It is joined together with another atom.

• It has mass and volume.

• It is weightless.

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 tightly together.

• hidden beneath the surface.

Tags

NGSS.MS-PS1-1

A student has a sample of an element. Which describes a trait the sample must have in order to be considered an element?

• The sample is a liquid at room temperature

• The sample is made of only one type of atom

• The sample contains different types of particles.

• The sample can be seen only with a microscope.

Which describes a property of all elements?

• All elements are metals.

• All elements have six electrons.

• All elements are pure substances.

• All elements exist in the solid phase.

A chemist has two samples of helium gas that are lightweight and mostly nonreactive. Which best explains why these two samples have the same properties?

• They have the same mass.

• They have the same weight.

• They have the same type of atoms.

• D. They have the same state of matter.

Tags

NGSS.MS-PS1-1

A student has two pieces of aluminum foil. Each piece can be folded and rolled into a wire. Why do both pieces of aluminum foil behave the same way?

• They are composed of the same types of atoms.

• They are composed of different types of atoms.

• They have the same physical properties, but different chemical properties.

• They have the same chemical properties, but different physical properties.

Tags

NGSS.MS-PS1-1

Check ALL examples of physical properties:

• color

• produces smoke when combined with another element

• odor

• temperature the substance melts

A student has a pure gold nugget and a pure gold bar. Which statement best describes the atoms in these two objects?

• The atoms in the gold nugget are bigger than the atoms in the gold bar.

• The atoms in the gold bar are identical to the atoms in the gold nugget.

• The individual atoms in the gold bar have less mass than the atoms in the gold nugget.

• The individual atoms in the gold bar are shaped differently than the individual atoms in the gold nugget.

Tags

NGSS.MS-PS1-1

Which substance is an element?

• a solid ring, which is composed of only gold atoms

• a grain of salt, which is composed of sodium and chlorine atoms

• a sample of water, which is composed of oxygen and hydrogen atoms

• a liquid medicine, which is composed of carbon, hydrogen, and oxygen atoms

Tags

NGSS.MS-PS1-1