Science 7.PS1.1 Study Guide

What types of particles are located in the nucleus of an atom?

• electrons and neutrons

• neutrons and nuclei

• protons and electrons

• neutrons and protons

Tags

NGSS.MS-PS1-1

What type of charge does a proton have?

• positive

• negative

• neutral

What type of charge does an electron have?

• positive

• negative

• neutral

What type of charge does a neutron have?

• positive

• negative

• neutral

The atomic number represents what parts of an atom?

• the number of protons and neutrons in a neutral atom

• the number of protons and electrons in a neutral atom

Tags

NGSS.MS-PS1-1

The Atomic Mass (usually, but not always a decimal number) represents the ______ and ______ in a neutral atom.

• protons and electrons
• neutrons and electrons
• protons and neutrons
• electrons and isotopes

Draw in the number of valence electrons in each group above the arrow. Use your finger to write and be as neat as possible.

When the number of protons changes in an atom, what happens?

• The atom becomes a different element
• The atom becomes a different isotope
• The atom becomes a different compound
• The atom becomes a different molecule

Tags

NGSS.HS-PS1-8

When the number of electrons changes in an atom, what happens?

• The atom becomes a molecule
• The atom gains or loses energy
• The atom becomes an ion
• The atom becomes a compound

Tags

NGSS.MS-PS1-2

When the number of neutrons changes in an atom, what happens?

• The atom becomes an isotope
• The atom becomes a molecule
• The atom's atomic number changes
• The atom's chemical properties change