Do Now Test (1-18)

Do Now Test (1-18)

Assessment

Flashcard

Science

8th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

What is the Bohr Model?

Back

The Bohr Model is a representation of the atom that depicts electrons orbiting the nucleus in defined paths or energy levels.

2.

FLASHCARD QUESTION

Front

How many protons does Gold have?

Back

Gold has 79 protons.

3.

FLASHCARD QUESTION

Front

What does the chemical formula 4Li2O represent?

Back

It represents 2 elements (Lithium and Oxygen), with 8 atoms of Lithium and 4 atoms of Oxygen.

4.

FLASHCARD QUESTION

Front

Which of the following elements are nonmetals: Hydrogen, Mercury, Sulfur, Oxygen?

Back

Hydrogen, Sulfur, and Oxygen are nonmetals; Mercury is a metal.

5.

FLASHCARD QUESTION

Front

What is the total number of atoms in the chemical formula 4H2O?

Back

The total number of atoms in 4H2O is 20 (8 Hydrogen and 4 Oxygen).

6.

FLASHCARD QUESTION

Front

What is the atomic number of Silicon?

Back

The atomic number of Silicon is 14.

7.

FLASHCARD QUESTION

Front

Define a molecule.

Back

A molecule is a group of two or more atoms bonded together, representing the smallest fundamental unit of a chemical compound.

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