6.2.1 Atoms and Elements Test Review

What is true of iron atoms and carbon atoms?

• They are the same because they are from the same elements.

• They are different because they are from different elements.

• They are the same because they have the same properties.

• They are different because one is solid and one is liquid.

A scientist compares two pieces of metal. The first piece is pure copper. It is shiny, brown, and flexible. The second piece is pure iron. It is dull, gray, and inflexible. What can be concluded from this information?

• One piece of metal is larger than the other.

• They are composed of the same type of atoms.

• They are composed of different types of atoms.

• One piece of metal weighs more than the other.

Which statement best describes atoms?

• They can be seen without a microscope.

• They make up every substance.

• They do not have volume.

• They do not have mass.

Tags

NGSS.MS-PS1-1

Why do gold and copper have different properties?

• They are different sizes.

• They are different densities.

• They are composed of the same type of atoms.

• They are composed of different types of atoms.

Tags

NGSS.MS-PS1-1

A student has two samples of pure iron. Both samples are malleable and ductile. Why are both samples similarly malleable and ductile?

• A. They have the same mass.

• B. They have the same volume.

• C. They are composed of the same type of atoms.

• D. They are composed of different types of atoms.

Which statement is true about the properties of atoms?

• A. All atoms can be seen without a microscope.

• B. All atoms are larger than a water molecule.

• C. All atoms have mass and occupy space.

• D. All atoms are composed of elements.

What is true of a 5-gram diamond and a 20-gram copper wire?

• A. Both objects are made of atoms.

• B. Both objects have the same mass.

• C. Both objects have identical properties.

• D. Both objects are in a liquid state at room temperature.

Which choice best describes the smallest particle of the element aluminum that retains all properties of aluminum?

• A. an atom

• B. a proton.

• C. a molecule.

• D. an electron.

A scientist has a liquid sample of one of these four elements. The scientist knows that the temperature of the sample is 1,000°C. What is the identity of the sample?

• copper

• gold

• iron

• silver

Tags

NGSS.MS-PS3-4

A gold coin is composed entirely of gold atoms. Which statement is true?

• All the atoms are the same element, so each atom will have different properties.

• All the atoms are the same element, so each atom will have the same properties

• The atoms are likely different elements, so each atom will have similar properties.

• The atoms are likely different elements, so each atom will have different properties.

Tags

NGSS.MS-PS1-1