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25-26 SEM1 Site GENERAL SCIENCE 1 PLC EOC EXAM RDR

Last updated about 9 hours ago
32 questions
Organisms and Non Living things are made of matter
LS 2-3 Develop a model to describe the cycling of matter and flow of energy among living and nonliving parts of an ecosystem.
1

What happens to matter in an ecosystem when a log decomposes?

1

Which model best shows matter cycling in a pond ecosystem?


PS 1-4 Develop a model that predicts and describes changes in particle motion, temperature, and state of a pure substance when thermal energy is added or removed.
Required
1

What is the relationship between temperature and thermal energy?

Draggable itemCorresponding Item
Temperature remains constant
No thermal energy added or removed
Increase in temperature
Thermal energy added
Decrease in temperature
Thermal energy removed
1

You are removing thermal energy from liquid water.
Which of the following models do you predict the particles will arrange into next?


Required
1

The arrangement of atoms of a substance changes during a phase change as modeled below.



Which of the following statements explains the change shown?

PS 1-1 Develop models to describe the atomic composition of simple molecules and extended structures.
Required
1

A student developed the four models of the molecules pictured. The first is a molecule called Glucose (C6H12O6) and is more complex than the three other molecules the student modeled, called: Carbon Dioxide (CO2), Diatomic Oxygen (O2), and water (H20)


Which statement best describes the difference between the three simpler molecules and the one glucose molecule?

Required
1



How many atoms of oxygen are in a molecule of glucose, C6H12O6?

Required
1

How many molecules are in 2 FeC5O5?

1
A chemist draws two molecular models. One model is drawn for formaldehyde (CH2O) and one model is drawn for formic acid (CH2O2). The chemist forgets to write the chemical name above each model. The models are labeled as Model 1 and Model 2, as shown in the figure.
Select terms from the lists the complete the sentences.
Formic acid CH2O2 is represented by Model __________. This model has a different number of __________atoms than the other model.
Required
1
Describe the composition of the molecule


_______ atom(s) of carbon
_______ atom(s) of oxygen
_______ atoms(s) of hydrogen
PS 1-3 Gather and make sense of information to describe that synthetic materials come from natural resources and impact society. (focus is identifying natural materials that are used to produce the synthetic material for human use)
Required
1

The image shows two processes.



Which statement best compares the processes?

Required
1

Sodium Alginate (C6H7NaO6) is a chemical that is commonly used in ice cream, yogurt, and salad dressing.  Calcium Chloride (CaCl2)is a salt that helps to prevent ice from forming on roads in cold climates by lowering the freezing point of water.  

Read the table below and determine what these two chemicals have in common.



Instructional Segment #2: Matter Cycles and Energy Flows through Organisms and Rocks Students who demonstrate understanding can:
ESS 2-1 Develop a model to describe the cycling of Earth's materials and the flow of energy that drives this process.
Required
1

Carbon exists in many forms on Earth. The diagram shows part of the carbon cycle. What does this diagram show?

LS 1-6 Construct a scientific explanation based on evidence for the role of photosynthesis in the cycling of matter and flow of energy into and out of organisms.
1

A student observes a small plant growing near a window. The plant produces oxygen bubbles and the leaves grow larger over time.

















Which statement best explains the role of photosynthesis in the plant?

Required
1

During photosynthesis, plants convert sunlight into what substance to be used for energy?

1

Based on the diagram, which statement best explains how matter and energy flow through this ecosystem?

LS 1-7 Develop a model to describe how food is rearranged through chemical reactions forming new molecules that support growth and/or release energy as this matter moves through an organism.
1

Why does your body break down food into smaller molecules?

1

What is the main purpose of cellular respiration?

1

The table below shows how the molecules in milk are digested and rearranged in the body to support bone growth:




Which of the following best describes how drinking milk aids bone repair in the body?

PS 1-2 Analyze and interpret data on the properties of substances before and after the substances interact to determine if a chemical reaction has occurred.
Required
1

A student placed a solid in a liquid, which produced the results shown in the following diagram.


Which of the following most likely took place?

Required
1

Lighting a match and baking a cake are two actions that involve chemical changes. Why are these actions considered chemical changes?

PS 1-5 Develop and use a model to describe how the total number of atoms does not change in a chemical reaction and thus mass is conserved.
Required
1
reactant side
product side

As methane burns, it reacts with oxygen and forms carbon dioxide and water. The chemical equation below models this chemical reaction. Examine each molecule represented in the chemical equation. Enter the numbers of each type of atom in the reactants and products.
Other Answer Choices:
2
4
1
1

Which statement correctly describes what happens to atoms during the chemical reactions of digestion?

PS 1-6 Undertake a design project to construct, test, and modify a device that either releases or absorbs thermal energy by chemical processes.
1

Students design a cold pack. When they press and break the inner pouch, the pack gets colder. Which change made this happen?

1

You wish to melt a block of ice to release a key inside the ice block. Which of the following is an example of a chemical process that would releases thermal energy to melt the block?

1

A group tests a hand warmer prototype, but it does not get warm enough. What should they do next in the design process?

ETS1-1Define the criteria and constraints of a design problem with sufficient precision to ensure a successful solution, taking into account relevant scientific principles and potential impacts on people and the natural environment that may limit possible solutions.

ETS 1-2 Evaluate competing design solutions using a systematic process to determine how well they meet the criteria and constraints of the problem.

ETS 1-3 Analyze data from tests to determine similarities and differences among several design solutions to identify the best characteristics of each that can be combined into a new solution to better meet the criteria for success.

ETS 1-4 Develop a model to generate data for iterative testing and modification of a proposed object, tool, or process such that an optimal design can be achieved.
1

Which is a criterion for designing a reusable water bottle?

1

Which factor relates to environmental impact in the design?

1

Several water bottles with a vacuum layer design are described in the table. Each bottle is the same size and has a steel outer lining. The inner lining can be made of different materials.

Students are asked to make a claim about which design will meet two criteria. The bottle must be break-resistant and must keep the water hot for the longest time. They are also asked to provide a supporting statement for their claim.

Which student claim and supporting statement are about the design that best meets the two criteria?

1

Three bottles are tested for insulation. Which characteristic of the water bottle should be used in a final design?

1

If Bottle A has a tight lid and Bottle B is made of lightweight materials, what should design engineers do?

1

What is the purpose of collecting data after each model test?