Energy and Matter

Your teacher has taken a beaker of water and placed it carefully over a lit burner in the classroom, as shown in the diagram. Predict what will happen to the motion of the water particles and the reason why you think this will occur?

• The speed of the particles will DECREASE because there is increased friction between the water particles.

• The speed of the particles will INCREASE because the thermal energy of the water in the beaker increases.

• The speed of the particles will DECREASE because the particles are moving farther apart.

• The speed of the particles will INCREASE because the water particles are breaking apart.

Tags

NGSS.MS-PS1-4

A student draws the following model to represent an atomic nucleus. What is wrong with the student's model?

• The electrons are missing from the nucleus.

• The signs of the protons and neutrons are switched.

• There should not be any negative signs in the model.

• There should be the same number of protons and neutrons.

Tags

NGSS.MS-PS1-1

All matter is made of invisible particles called

• atoms

• mixtures

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Elements are made up of

• earth, wind, water or fire.

• atoms.

• the universe.

• non-matter.

Tags

NGSS.MS-PS1-1

A substance made of 2 or more elements are

• atoms

• compounds

• elements

• molecules

Tags

NGSS.MS-PS1-1

What describes the kinetic energy and temperature of the substance in its gaseous state?

• The particles are close together, moving rapidly, with a lot of kinetic energy.

• The particles are spread out, moving slowly, with a lot of kinetic energy.

• The particles are close together, moving slowly, with very little kinetic energy.

• The particles are spread apart, moving rapidly, with a lot of kinetic energy.

Tags

NGSS.MS-PS1-4

The four states of matter are:

• crystalline, amorphous, endothermic and exothermic.

• solid, liquid, gas and sublimation.

• solid, liquid, gas and plasma.

• melting, boiling, condensation and freezing.

Tags

NGSS.MS-PS1-4

This element has 3 electrons, 3 protons and 4 neutrons. Which diagram shows correct position of electrons, neutrons, and protons?

• A

• B

• C

• D

Tags

NGSS.MS-PS1-1

Where are the electrons in an atom found?

• in the nucleus

• both inside and outside of the nucleus

• attached to protons

• circling the nucleus

Which of the following pictures represents an atom?

• picture A

• picture B

• none of the above

Tags

NGSS.MS-PS1-1