Basic Chem. for Bio Students!

Basic Chem. for Bio Students!

Assessment

Flashcard

Biology

10th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

What are hydrogen bonds?

Back

Weak attractions between water molecules that cause them to cling together.

2.

FLASHCARD QUESTION

Front

How many protons are in a potassium atom?

Back

19 protons.

3.

FLASHCARD QUESTION

Front

What is a neutron?

Back

A subatomic particle found within the nucleus, has a neutral charge, and a mass of 1.

4.

FLASHCARD QUESTION

Front

How many neutrons are in a potassium atom?

Back

20 neutrons.

5.

FLASHCARD QUESTION

Front

What is a molecule?

Back

A combination of two or more atoms held together by chemical bonds.

6.

FLASHCARD QUESTION

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom, which defines the element.

7.

FLASHCARD QUESTION

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of only one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.

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