WorksheetsAtomic Theory and Periodic Table
Total questions: 37
Worksheet time: 1hrs 14mins
From left to right, are the numbers (130.5℃, 141.1℃, 156.09℃, 160℃, 184.5℃) increasing or decreasing
Increasing
Decreasing
From left to right, are the numbers (4℃, 0℃, -3℃, -7℃, -8.5℃, -10℃) increasing or decreasing?
Increasing
Decreasing
Look at the diagram above. Pictured are three atoms of the same element. We know this because each atom has only one proton. Which of the following statements is therefore accurate.
Two atoms of the same element can differ in the number of protons, neutrons, or electrons.
Two atoms of the same element can differ in only in the number of protons or electrons.
Two atoms of the same element can differ in only in the number of neutrons or electrons.
Two atoms of the same element can differ in only in the number of protons and neutrons.
Look at the diagram above. Pictured are a Hydrogen and a Gold atom. Both Hydrogen and Gold are Neutral Atoms. Which of the following defines a neutral atom?
A neutral atom has equal numbers of protons and electrons.
A neutral atom has equal numbers of neutrons and electrons.
A neutral atom has equal numbers of protons and neutrons.
A neutral atom has different numbers of protons, neutrons and electrons.
Which statement about sub-atomic particles is accurate?
protons are lighter than neutrons
neutrons are lighter than electrons
both protons and neutrons are heavier than electrons
Electrons are heavier than both protons and neutrons
All atoms have a ___________ charged nucleus, surrounded by a ___________ charged cloud.
positively; negatively
positively; positively
negatively; negatively
negatively; positively
Kathryn is making a model of a lithium atom with food! A lithium atom has three protons, four neutrons, and three electrons. She has a small bowl and some cooked spaghetti noodles. She also has peanuts, raisins, and uncooked grains of rice. If she uses the bowl as the nucleus, what items should she place inside the bowl?
She should place three peanuts and three grains of rice inside the bowl.
She should place three grains of rice and three raisins inside the bowl.
She should place three peanuts and four grains of rice inside the bowl.
She should place three peanuts and four raisins inside the bowl.
Kathryn is making a model of a lithium atom with food! A lithium atom has three protons, four neutrons, and three electrons. She has a small bowl and some cooked spaghetti noodles. She also has peanuts, raisins, and uncooked grains of rice. Which items should she place outside the bowl?
Two spaghetti noodles and three grains of rice
One spaghetti noodle and two grains of rice
Two spaghetti noodles and three peanuts
One spaghetti noodles and two raisins
How many neutrons does the atom of hydrogen have?
(a)
How many neutrons does the atom of helium have?
(a)
How many neutrons does the atom of Molybdenum have
(a)
In the diagram above, what particle would be located in the region labeled “x”
Protons
Neutrons
Electrons
Both Protons and Neutrons
True of False: Part B is an electron
True
False
True of False: Part A is an proton
True
False
True of False: Part E is an electron
True
False
True of False: Part C is an electron
True
False
True of False: Part E is the nucleus
True
False
True of False: Part C is the neutron
True
False
True of False: Part B is the neutron
True
False
True of False: Part B is the electron cloud
True
False
Which statement correctly pairs the part of the atom to its charge?
Electrons are positively charged
Neutrons are negatively charged
Protons are positively charged
Electrons have no charge
In order to have a new / different atom what has to change?
the number of protons
the number of electrons
the number of neutrons
the number of both protons and neutrons
If an atom has 8 positively charged subatomic particles, which of the following must it also have to be considered a neutral atom?
12 Neutrons
8 Protons
8 Electrons
12 Protons
How are elements listed in the modern periodic table?
By their atomic mass
By their atomic weight
By their atomic number
By their atomic symbol
The shaded portion of the table above represents the group alkali metals. What is the correct term for the shaded portion?
Period
Series
Column
Row
Which of the following statements is true?
Non-metals are good conductors of heat and electricity
Metals are good conductors of heat and electricity
Non-metals are poor insulators
Metals are good insulators
What is the item pictured above called?
Periodic Table Guide
Element Symbol
Element Key
Period Graph
The atomic number is the same as the number of ________________ in an atom of an element.
Neutrons
Electrons
Protons
Atoms
According to the diagram above, the density of an element increases and then decreases as you read from left to right in a(n) _____________.
Element
Group
Series
Period
Where will you find two elements with similar properties?
In the same period
In the same row
In the same group
In the same series
Which statement best summarizes the development of the atomic theory over time?
Changes in atomic models showed that the atomic theory was based on opinion. Everyone had a different opinion and never agreed.
The atomic theory was modified with the discovery of every new element. The same person discovered all the elements.
The discovery of new evidence resulted in changes to the atomic theory. Parts of the old theories were correct and were included in the newer information.
A group of scientists wanted to test the effects of Nitra-Grow, a chemical additive that can be given to plants to help them grow. 3 test groups of plants were given all the same time of sunlight, the same type of soil, and the same amount of water. Plant A was given no extra chemicals. Plant B was given 5g of Nitra-Grow. Plant C was given 5g of Ammonia to see if Nitra-Grow worked any better than a basic nitrogen-based household product. The plants are then measured on 5 consecutive days to find their average height (in cm).
What is the independent variable?
The height of the plant
The plant with no chemical additive
The plants with chemical additives
The type of soil
A group of scientists wanted to test the effects of Nitra-Grow, a chemical additive that can be given to plants to help them grow. 3 test groups of plants were given all the same time of sunlight, the same type of soil, and the same amount of water. Plant A was given no extra chemicals. Plant B was given 5g of Nitra-Grow. Plant C was given 5g of Ammonia to see if Nitra-Grow worked any better than a basic nitrogen-based household product. The plants are then measured on 5 consecutive days to find their average height (in cm).
What is the dependent variable?
The height of the plant
The plant with no chemical additive
The plants with chemical additives
The type of soil
A group of scientists wanted to test the effects of Nitra-Grow, a chemical additive that can be given to plants to help them grow. 3 test groups of plants were given all the same time of sunlight, the same type of soil, and the same amount of water. Plant A was given no extra chemicals. Plant B was given 5g of Nitra-Grow. Plant C was given 5g of Ammonia to see if Nitra-Grow worked any better than a basic nitrogen-based household product. The plants are then measured on 5 consecutive days to find their average height (in cm).
What is the control group?
The height of the plant
The plant with no chemical additive
The plants with chemical additives
The type of soil
A group of scientists wanted to test the effects of Nitra-Grow, a chemical additive that can be given to plants to help them grow. 3 test groups of plants were given all the same time of sunlight, the same type of soil, and the same amount of water. Plant A was given no extra chemicals. Plant B was given 5g of Nitra-Grow. Plant C was given 5g of Ammonia to see if Nitra-Grow worked any better than a basic nitrogen-based household product. The plants are then measured on 5 consecutive days to find their average height (in cm).
What is a constant?
The height of the plant
The plant with no chemical additive
The plants with chemical additives
The type of soil
A group of scientists wanted to test the effects of Nitra-Grow, a chemical additive that can be given to plants to help them grow. 3 test groups of plants were given all the same time of sunlight, the same type of soil, and the same amount of water. Plant A was given no extra chemicals. Plant B was given 5g of Nitra-Grow. Plant C was given 5g of Ammonia to see if Nitra-Grow worked any better than a basic nitrogen-based household product. The plants are then measured on 5 consecutive days to find their average height (in cm).
Based on the data, make a prediction about what the approximate height of plant A would be on Day 9.
(a)
A group of scientists wanted to test the effects of Nitra-Grow, a chemical additive that can be given to plants to help them grow. 3 test groups of plants were given all the same time of sunlight, the same type of soil, and the same amount of water. Plant A was given no extra chemicals. Plant B was given 5g of Nitra-Grow. Plant C was given 5g of Ammonia to see if Nitra-Grow worked any better than a basic nitrogen-based household product. The plants are then measured on 5 consecutive days to find their average height (in cm).
Based on the data, which would be the best conclusion?
After a long period of time the Nitra-Grow would have the largest plants.
After 5 days, the Nitra-Grow plants grew 1.2 cm taller than the Ammonia plants.
You should not use chemical additives on your plants.
The Ammonia worked the best.
