Common-Core/ Grade 7
Science MCQ Based On Classifying elementary substances and compounds using chemical formulas
Our free online Science test quiz for Grade 7 will assist you to improve your Science skills on every concept in a fun interactive way.
Happy students
Awesome classes
Common-Core Grade 7 - 7 Classifying elementary substances and compounds using chemical formulas
|
Elements combine to form chemical compounds.
Substances that are composed of only one chemical element.
Mercury is an element. It is also known as quicksilver and was formerly named hydrargyrum from the Greek word.
One atom of carbon= C One molecue of oxygen = O2
Elements can not be broken into parts. Elements are in fixed numbers but compounds are endless.
HI is a strong acid, one that is ionized completely in an aqueous solution.
Elements combine to form chemical compounds.
Compounds can be break into 2 or more elements.
A compound is the combination of two or more elements.
Elements can not be decomposed into any other elements.
At JustTutors, we believe in the power of digital technology to help students get personalized learning and attention from India's best-in-class science, english and math tutors. We are focused on creating a top-class e-learning platform that brings together the best teachers, technology, media, content for creating a seamless and world-class experience for every student.