DE_CHEM_2.5_Periodic Trends

Required

4

What do I already know about periodic trends?

Question 2 | 01:28

Question 3 | 02:20

Question 4 | 04:57

00:00/00:00

Question 2

01:28

Question 3

02:20

Question 4

04:57

Required

1

Scientists have observed that atoms in families share the same _______.

Required

1

What is one characteristic that makes gold so valued for jewelry over metals like nickel and copper?

Required

2

Select the statements that are considered true.

Required

1

Using the periodic table, explain why rubidium (Rb) has higher ionization energy than cesium (Cs).

Required

1

Using calcium’s atomic structure, as shown in the image, what is this element’s atomic number?

Required

1

Draggable item		Corresponding Item
neutron(s)		found in a cloud that orbits an atom's nucleus
proton(s)		subatomic particles that has a positive charge
nucleus		subatomic particles that has no charge
atomic number		equal to the number of protons
electron(s)		made up of protons and neutrons

Required

1

If a neutral atom of Gallium (atomic number 31) has 39 neutrons in its atomic nucleus, which of the following statements are true?

3

The reactivity of metals tends to decrease from __________ to __________ across the periodic table. The reactivity of metals also tends to increase as you move __________ within a group.

Question 13 | 01:26

00:00/00:00

Question 13

01:26

1

As you move from left to right in the periodic table, what trend do we see in regard to the density of metals?

1

How does reactivity change as you move through the periodic table.

DE_CHEM_2.5_Periodic Trends

What do I already know about periodic trends?

What is one characteristic that makes gold so valued for jewelry over metals like nickel and copper?

Select the statements that are considered true.

Using the periodic table, explain why rubidium (Rb) has higher ionization energy than cesium (Cs).

Using calcium’s atomic structure, as shown in the image, what is this element’s atomic number?

If a neutral atom of Gallium (atomic number 31) has 39 neutrons in its atomic nucleus, which of the following statements are true?

Why does the size of the atom (atomic radius) decrease as you move left to right on the periodic table?

As you move from left to right in the periodic table, what trend do we see in regard to the density of metals?

Which element is the most reactive with water?

What do I already know about periodic trends?

What is an atom?

If you combine elements into other substances, the properties of these substances are always the same as the base elements.

Which of the following elements DO NOT have an atomic symbol that matches with the first letter of that element?

What is one characteristic that makes gold so valued for jewelry over metals like nickel and copper?

Select the statements that are considered true.

Using the periodic table, explain why rubidium (Rb) has higher ionization energy than cesium (Cs).

Using calcium’s atomic structure, as shown in the image, what is this element’s atomic number?

If a neutral atom of Gallium (atomic number 31) has 39 neutrons in its atomic nucleus, which of the following statements are true?

Why does the size of the atom (atomic radius) decrease as you move left to right on the periodic table?

As you move from left to right in the periodic table, what trend do we see in regard to the density of metals?

Which element is the most reactive with water?

What is an atom?

If you combine elements into other substances, the properties of these substances are always the same as the base elements.

Which of the following elements DO NOT have an atomic symbol that matches with the first letter of that element?