Science Milestones

A scientist combines oxygen and hydrogen to form water.  This combination illustrates that water is

• An atom

• An element

• A mixture

• A compound

Tags

NGSS.MS-PS1-1

What is the smallest particle of the element gold (Au) that can still be classified as gold?

• Atom

• Proton

• Neutron

• Molecule

In a laboratory, a sealed container with 100 g of steam is cooled until all the steam becomes a liquid.  The container is then cooled further until all the water becomes a solid.  Which of the following remains constant during both of these changes?

• The mass of the water

• the pressure in the container

• the total energy of the water

• the position of the atoms in the container

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

A mixture of iron fillings and sulfur can easily be separated by

• Placing the mixture in water

• performing a chemical reaction

• heating the mixture

• using a magnet

A chemical reaction produces two new substance, and each product has a mass of 50 grams.  What was the total mass of the reactants

• 25 grams

• 50 grams

• 100 grams

• 1000 grams

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The atom is composed of electrons, protons, and neutrons.  What is the electric charge on the neutron?

• -1

• +1

• 0

• +2

Which of the following is an example of a physical change but not a chemical change

• A log gives off heat and light as it burns

• A tree stores energy from the Sun in its fruit

• A penny lost in the grass slowly changes color

• A water pipe freezes and cracks on a cold night

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Energy of motion is which type of energy?

• Potential

• Kinetic

• Sound

• Gravitational

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

What type of energy is in this picture?

• Kinetic

• Potential

• Chemical

• Sound

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-2

NGSS.MS-PS3-5

What kind of energy is represented in this picture?

• Thermal

• Potential

• Nuclear

• Mechanical

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3