Unit 1 Class Notes - Review

Multiple Choice

Who are the key figures depicted in the image related to the Oxygen Saga?

• Antoine Lavoisier

• Joseph Priestley

• Robert Boyle

• John Dalton

Multiple Choice

What are the key differences between numbers and quantities as described in the image?

• Numbers are theoretical, Quantities are measured

• Numbers have units, Quantities do not

• Numbers are used in science, Quantities are used in math

• Numbers are specific values, Quantities are ranges of errors

Multiple Choice

What are the components of a good model?

• Particles

• Labels

• Key

• Arrows to show direction or movement

Multiple Choice

Imagine you're a detective in the world of science! What would the 'claim' represent in your scientific investigation, also known as claim evidence reasoning?

• The clues you've gathered

• The big reveal or main idea

• The thought process behind your claim

• The analysis of your findings

Multiple Choice

Reasoning is __________________.

• A statement of conclusion that answers the original question/problem

• Scientific data that supports the claim

• A logical explanation that connects the evidence to the claim

Open Ended

Why is the evidence important?

Multiple Choice

During an experiment, a student combines a solid, metallic substance with a clear liquid in a beaker. The mixtures turns hot, produces bubbles, and sparks. Based on the observations, the student can conclude that –

• A. a phase change has occurred.

• B. atoms have been rearranged to form a new substance.

• C. the products are likely harmful to human skin.

• D. the metal substance is a poor conductor of heat.

Multiple Choice

What are the rules for drawing particle diagrams?

• All particles drawn as squares

• Include labels and/or a key

• Particles of different substances have the same color

• Draw a reasonable number of particles to show your argument

Multiple Choice

What significant change regarding the kilogram was adopted in 2019?

• New definition based on Planck's constant

• Reintroduction of the original kilogram

• Change to a different unit of mass

• Elimination of the kilogram as a unit

Open Ended

Which has a great mass? Explain.

Fill in the Blanks

Multiple Select

Match the prices below with the glassware: $3.80, $4.50, $6.50, $21.77, $30.00, $64.34

• $6.50

• $30.00

• $4.50

• $21.77

• $3.80

Multiple Choice

What are the main differences between a 500 ml and a 100 ml volumetric flask?

• Size

• Material

• Color

• Shape

Multiple Choice

The difference between a car hitting a wall vs. a car hitting a hay stack is

• the Impulse on the car hitting the wall is greater
• the change in momentum of the car hitting the wall is greater
• the force on the car hitting the hay stack is greater
• the collision time of the car hitting the hay stack is greater

Multiple Choice

Which number is more precise?

• 50.234 g

• 50.2 g

Multiple Choice

What is the total length of the three rulers shown in the image?

• 150 cm

• 200 cm

• 100 cm

• 300 cm

Multiple Choice

What is the difference between precision and accuracy in scientific measurements?

• Precision refers to how close data is to the target value.

• Accuracy refers to how tightly grouped the data is.

• Precision is how tightly grouped the data is.

• Accuracy is how far the data is from the target value.

Multiple Choice

What is the relationship between volume and the space a substance occupies?

• Volume is the weight of a substance

• Volume is the entire space a substance takes up

• Volume is the temperature of a substance

• Volume is the color of a substance

Multiple Choice

What are the rules for determining significant figures?

• All natural numbers 1-9 count once.

• Zeros always count between natural numbers.

• Zeros in front of natural numbers never significant.

• Zeros at end are significant if a decimal point is present in the number.

Multiple Choice

What are the four categories represented in the table?

• Vocab/definitions

• Big Ideas/Concepts/Models

• Procedures

• Worked Examples

Multiple Choice

What is the result of 2.0 + 5.61 when rounded to the least precise place value?

• 7.61

• 7.6

• 8.0

• 7.5

Multiple Choice

In multiplication and division, you should round to the least number of ___

• decimal places

• significant figures

• whole numbers

• fractions