Warmer world task five

This is the smallest complete part of which of the following?

• molecule

• atom

• element

• compound

Tags

NGSS.MS-PS1-1

This is a model of the element Boron. It has an atomic number of 5. What is its atomic mass?

• 5

• 11

• 6

• 16

Tags

NGSS.MS-PS1-1

Sodium (Na) has 11 protons. What is the charge on the example of sodium shown in the diagram?

• 0

• 1

• -1

• +1

Tags

NGSS.MS-PS1-1

Why are the neutrons arranged in a way that separates the protons?

• Protons repel each other. Neutrons put some distance between them to keep the nucleus stable.

• Whoever set up this model thought it looked neatly organized but the arrangement really doesn't matter.

• Neutrons repel each other. The arrangement of the protons on the outside forces the neutrons to stay together.

• The attraction between protons and neutrons makes the particles automatically organize themselves in this pattern.

Tags

NGSS.MS-PS1-1

Which of the equations below correctly models the reaction shown in the diagram?

• H2 + N2 -> NH3

• 6H + 2N -> NH3

• 3H2 + N2 -> 2NH3

• (H2)3 + N2 -> 2NH3

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which two of the following statements is true about the cookies?

• The chocolate only underwent a physical change because the chips melted a little but are still chocolate.

• The chocolate chips are part of the cookie so they underwent a chemical change.

• The butter, sugar and flour underwent a chemical change because when they were heated they combined to form a new substance.

• The sugar in the dough reacted immediately because it dissolved when mixed with the other ingredients.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

Match the following

• Physical change

• 
• Atom

• 
• Nucleus

• 
• Molecule

• 
• Chemical change

• 

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Select all statements that are correct statements about the water cycle.

• The water cycle demonstrates a series of chemical reactions.

• The water cycle demonstrates a series of physical changes.

• The water cycle demonstrates the conservation of matter because water is not destroyed or created, it is only changed.

• The water cycle shows that in nature, the Law of Conservation is not always true because when water evaporates it disappears.

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

One of the concerns in long term space travel is the supply of food and oxygen. How could algae farms help solve this concern? Choose all answers that are correct.

• Algae can be grown in large quantity and made into tasty snacks

• Algae undergo photosynthesis so it can convert carbon dioxide into oxygen and excess algae can be used as food.

• The algae undergoes respiration and the passengers of the space ship undergo photosynthesis, so the cycle of oxygen and carbon dioxide can repeat over and over.

• Algae reproduces quickly so there would never be a shortage of food or oxygen.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Nitrogen compounds are necessary nutrients that both plants and animals use to make proteins. Nitrogen cycles through different parts of the ecosystem, forming new nitrogen compounds depending on where they are in the nitrogen cycle. Choose all of the statements about the nitrogen cycle that are true.

• Nitrogen compounds only undergo physical changes.

• Nitrogen goes through many chemical changes throughout the nitrogen cycle.

• The Nitrogen cycle is an example of the conservation of matter in nature.

• Nitrogen is cycled through both biotic and abiotic parts of an ecosystem.

Tags

NGSS.MS-LS2-3