Search Header Logo
Unit 2 Pt 2 Test Review 2024

Unit 2 Pt 2 Test Review 2024

Assessment

Flashcard

Science

10th Grade

Practice Problem

Hard

NGSS
HS-PS1-1, HS-PS1-3, HS-PS1-2

Standards-aligned

Created by

Wayground Content

FREE Resource

Student preview

quiz-placeholder

15 questions

Show all answers

1.

FLASHCARD QUESTION

Front

What is a covalent substance?

Back

A covalent substance is one that is formed by the sharing of electrons between atoms, typically resulting in low melting points and poor solubility in water.

2.

FLASHCARD QUESTION

Front

What is an ionic substance?

Back

An ionic substance is formed by the transfer of electrons from one atom to another, resulting in high melting points and the ability to conduct electricity when dissolved in water.

3.

FLASHCARD QUESTION

Front

What is a polyatomic ion?

Back

A polyatomic ion is a charged species composed of two or more atoms covalently bonded, which can act as a single unit in chemical reactions.

4.

FLASHCARD QUESTION

Front

How can you identify a polyatomic ion in a chemical formula?

Back

You can identify a polyatomic ion in a chemical formula by the presence of parentheses, indicating that the group of atoms within is treated as a single unit.

5.

FLASHCARD QUESTION

Front

How many valence electrons does Germanium (Ge) have?

Back

Germanium (Ge) has 4 valence electrons.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

6.

FLASHCARD QUESTION

Front

How many valence electrons does Astatine (At) have?

Back

Astatine (At) has 7 valence electrons.

Tags

NGSS.HS-PS1-1

7.

FLASHCARD QUESTION

Front

What is the significance of valence electrons?

Back

Valence electrons determine how an atom can bond with other atoms, influencing the chemical properties and reactivity of the element.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Access all questions and much more by creating a free account

Create resources

Host any resource

Get auto-graded reports

Google

Continue with Google

Email

Continue with Email

Classlink

Continue with Classlink

Clever

Continue with Clever

or continue with

Microsoft

Microsoft

Apple

Apple

Others

Others

Already have an account?