Human Anatomy & Physiology Chapter 2 – Basic Chemistry Review

Two or more elements chemically combined together are called a

• Element

• Compound

• Mixture

• Solution

Tags

NGSS.MS-PS1-1

The simplest natural substance is called a(n)

• Element

• Compound

• Mixture

• Solution

Refer to the diagram of the periodic table entry for Hydrogen. What is the name of the element with the symbol 'H'?

• Hydrogen

• Helium

• Oxygen

• Nitrogen

What is the atomic weight of Hydrogen?

• 1.00797

• 12.011

• 15.999

• 4.0026

Refer to the diagram of the periodic table entry for Hydrogen. What is the symbol for Hydrogen?

• H

• He

• Hy

• Hg

Refer to the diagram of the periodic table entry for Hydrogen. What is the atomic number of Hydrogen?

• 1

• 2

• 8

• 12

Every atom of a particular element contains the same number of ________.

• protons

• neutrons

• electrons

• isotopes

Protons are ________ charged particles found inside the nucleus of an atom.

• positively

• negatively

• neutrally

• doubly

Why does an atom stay electrically neutral?

• Because it has more protons than electrons

• Because the number of protons and electrons are usually equal

• Because it has no neutrons

• Because it has a positive charge

What is the basic unit of matter?

• molecule

• cell

• element

• atom