6th Last nine weeks exam

The three diagrams below show the three states of matter. Which statement best identifies and explains a state?

• State A is a solid because the particles are evenly packed.

• State B is a solid because the particles are evenly spaced.

• State C is a gas because the particles are evenly spaced.

• State C is a gas because the particles fill the space.

Tags

NGSS.MS-PS1-4

Which statement is correct?

• Solids have a definite volume and shape because their molecules are tightly packed.

• Liquids have a definite volume and variable shape because their molecules are tightly packed.

• Solids have a definite volume and a variable shape because their molecules are tightly packed.

• Gases fill the volume of their containers because their molecules are tightly packed.

The following diagram shows four liquids layered in a beaker. You add a cherry tomato and it floats between the water and the dish soap.

• The density of the tomato is greater than 1 g/cm³ and less than the density of the dish soap.

• The density of the tomato is greater than the density of honey.

• The density of the tomato is less than 1 g/cm³ and greater than the density of the dish soap.

• The density of the tomato is less than the density of olive oil.

Tags

NGSS.MS-PS1-2

Which statement is NOT correct?

• A solid has a definite volume and low kinetic energy.

• A liquid has no definite volume and takes the shape of the container.

• A gas has no definite shape or volume.

• A gas has high kinetic energy.

Tags

NGSS.MS-PS1-4

How are liquids and gases alike?

• They both fill the entire container they are placed in.

• Neither have a definite volume.

• They do not have a definite shape.

• They both have low kinetic energy.

Object A and Object B have the same density, but Object A has a greater mass. Which object has the larger volume?

• Both objects have the same volume.

• It is not possible to tell which object has a greater volume.

• Object A has a greater volume.

• Object B has a greater volume.

Which statement about density is NOT correct?

• Density is the mass per unit volume of a substance.

• The density of an object does not depend on its mass.

• The volume of an object does not depend on its mass.

• The density of an object varies depending on its mass and volume.

How are molecules in a gas different from molecules in a liquid?

• Molecules in a gas can move but molecules in a liquid cannot.

• Molecules in a gas are more tightly packed than molecules in a liquid.

• Molecules in a gas are in a similar arrangement as molecules in a liquid.

• Molecules in a gas can move more than molecules in a liquid.

Tags

NGSS.MS-PS1-4

Which of the following statements about nonmetals is correct?

• Nonmetals are dull, malleable, non-ductile, and have a low melting point.

• Nonmetals are dull, non-malleable, non-ductile, and have a high melting point.

• Nonmetals are dull, non-malleable, non-ductile, and can be gases, liquids, or brittle solids.

• Nonmetals are lustrous, non-malleable, non-ductile, and can be gases, liquids, or brittle solids.

A substance has a fixed volume and no definite shape. This substance is .

• A gas.

• A solid.

• A liquid.
• Not possible.

Tags

NGSS.MS-PS1-4