Chemistry

What is the most reactive metal group on the periodic table?

• Halogens

• Noble Gases

• Transition Metals

• Alkali Metals

Which ones are evidence of a chemical reaction?

• boiling

• color

• temp

• mixture

The Noble ____ are the most stable.

Whats your favorite part of chemistry?

• periodic table

• counting atoms

• subatomic particle

• balancing equations

What is the difference between physical and chemical changes?

An electron is

• positively charged

• neutral

• negatively charged

Tags

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atomic number is

• the number of protons

• the number of electrons

• the number of neutrons

• the location of an atom on the periodic table

Atomic Mass is the number of

• protons and neutrons in the nucleus of an atom

• protons and electrons in the nucleus of an atom

• neutrons and electrons in the nucleus of an atom

Tags

NGSS.MS-PS1-1

Conservation of mass means

• all the atoms present before a chemical reaction are not present after

• atoms present before chemical reactions are present after

• new substances and new elements are formed in a chemical reaction

Tags

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A pure substance that is a compound is made out of

• particles of more than one type of atom

• particles of the same type of atom

• a mixture of two or more substances that can be physically separated

Tags

NGSS.MS-PS1-1