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Science 8 Final Exam

Last updated 6 months ago
40 questions
1

The steps commonly used by scientists when planning and conducting an investigation are referred to as the _______________.

1

The first step of any investigation is

1

To communicate trends in data, the data should be presented in a(an) __________.

1

Volume is defined as the amount of _____________ an object takes up.

1

When experimenting, the value of the dependent variable depends on the ____________________ .

1

_____________ have no definite shape, but definite volume.

1

_____________ have a definite shape and definite volume.

1

____________ take the shape and volume of any container.

1

Which phase of matter has the most kinetic energy.

1

As an ice cube melts (goes from solid to liquid), what happens to the particles?

1

Temperature can be defined as

2

In your own words, define a mixture. Then, give an example of one.

1

Based on your knowledge of science and first hand experiences, what separation technique would be used to separate a mixture of sand and water?

1

What is the physical property that can be used to identify matter and is responsible for creating these layers in the test tube?

1

Density is a physical property of matter and describes the relationship between the mass and volume of matter. What is the mathematical representation of density?

1

What is a positive subatomic particle called?

1

What charge does an electron have?

1

This table organizes the elements based on increasing atomic number.

Image showing the element box of Hydrogen with the symbol H and with an atomic number of 1 in the top left corner.
1

This number is what gives the element its identity and tells us how many protons there are.

2

Construct an explanation to describe the relationship between atoms and molecules.

Image comparing the atomic structure of diamond versus graphite.
1

In terms of atoms, why do graphite and diamond have different properties even though they are both made up of the element carbon? Support with evidence.

1

Which statement best describes the outcome of a chemical reaction

1

Which of the following is an example of a chemical reaction

1

Which of the following is an example of a physical change

1

In a physical change ___________________.

Image showing a chemical reaction occurring in a test tube.
1

What are three pieces of evidence that indicate a chemical reaction has occurred?

1

In terms of thermal energy, explain the difference between an endothermic process and an exothermic process.

1

According to the model, did a chemical reaction occur? Use evidence from the model to justify your claim.

1

In a chemical reaction, mass is conserved. This means that

1

What would we expect to happen to the overall mass before and after a chemical reaction?

1

If an object starts to accelerate _____________________________________ .

1

What type of energy is made available by the flow of ELECTRONS?

1

According to the graph and your experience in science, how is the kinetic energy of a moving object related to the mass of that object?

1

As an object increases its height from the ground, the potential energy of that object _______________.

1

According to the Law of Conservation of Energy,

1

Which of the following do all waves transfer?

1

What is the difference between an electromagnetic wave and a mechanical wave?

1

What happens to the energy of the waves within the electromagnetic spectrum as you move from radio waves to gamma waves?

1

What is the relationship between frequency and wavelength?

1

What is the relationship between frequency and energy?