P.5.5A.1-3 Review

How do atoms bond together to make molecules and compounds?

• They share protons.

• They share neutrons.

• They share electrons.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

A student looks at three models. Which information can the student learn from the models?

• Different molecules can have the same types of atoms.

• Molecules always have more than two atoms connected.

• Atoms can connect to molecules but not to other atoms.

• Atoms are larger than molecules.

Tags

NGSS.MS-PS1-1

A carbon atom has 6 protons, 6 neutrons, and 6 electrons. How would a Bohr model (picture of atom) show the protons in a carbon atom?

• The particles are evenly distributed through the mass of carbon.

• Electrons form a cloud around a nucleus of protons and neutrons.

• Neutrons revolve around a nucleus of electrons and protons.

• Electrons move in fixed orbits around a nucleus of protons and neutrons.

Tags

NGSS.MS-PS1-1

Examine the figures. Which figure represents a solid, and what evidence supports it?

• Figure 1; the particles are tightly packed.

• Figure 2; the particles are tightly packed.

• Figure 1; the particles are filling the entire container.

• Figure 2; the particles are far apart.

Tags

NGSS.MS-PS1-1

Which tool can be used to find the volume of an irregularly shaped object?

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A student changes the temperature of 5 mL of water for 30 minutes. The student records observations in a table. Which statement correctly describes the observations?

• The liquid water starts to change into a gas at 100 degrees celsius.

• The solid water starts to change into a liquid at 100 degrees celsius.

• Liquid water always requires 30 minutes to change into a gas completely.

• Solid water always requires 30 minutes to change into a liquid completely.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

A student has two different metal samples that are the same size and shape. Which action should the student perform to determine which metal has the greatest density?

• Determine the solubility of each metal with a beaker of water.

• Determine the hardness of each metal by scratching each with an iron nail.

• Determine the mass of each metal with a balance.

• Determine the volume of each metal with a ruler.

Which substance is magnetic and conducts heat?

• wood

• plastic

• iron

• paper

An aluminum block, an iron ball, a glass sheet, and a wooden block each with the same mass are placed in direct sunlight. The table shows the time required for the temperature of each object to increase by 1 degree Fahrenheit. Which object will have the highest temperature after all of the objects are placed for 200 seconds in direct sunlight?

• aluminum block

• glass sheet

• iron ball

• wooden block

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

When an electrician makes repairs to the wires that carry electrical current throughout a house, he must use a special plastic tape. Which statement would best explain why an electrician would use plastic tape to repair electrical wires?

• The plastic tape will help keep the electrical wires from overheating.

• The plastic tape will make the electrical wires more flexible.

• The plastic tape will act as an insulator of the electrical current.

• The plastic tape will last for a very long time.