Second Quarter Worksheet No. 1 Science 9

Both elements and compounds are pure substances.

• Agree

• Disagree

The chemical symbol of an element always matches the element's name.

• Agree

• Disagree

Two or more different elements chemically combine to form compounds.

• Agree

• Disagree

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

This refers to a colorless, odorless, tasteless, flammable gaseous substance that is the simplest member of the family of chemical elements.

• Periodic Table

• Elements

• Compounds

• Hydrogen

This refers to a tabular arrangement of the chemical elements, ordered by increasing atomic number.

• Periodic Table

• Elements

• Compounds

• Hydrogen

A substance that cannot be broken down into simpler substances by ordinary means and it is made up of only one kind of atom.

• Periodic Table

• Elements

• Compounds

• Hydrogen

This refers to the pure substances that made up of more than one element or two or more element chemically combined.

• Periodic Table

• Elements

• Compounds

• Hydrogen

They are considered as the basic units of matter and the defining structure of elements.

• Molecules

• Chemical Formulas

• Chemical Symbol

• Atom

This refers when 2 or more atoms are chemically bonded.

• Molecules

• Chemical Formulas

• Chemical Symbol

• Atom

It is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and plus and minus signs.

• Molecules

• Chemical Formulas

• Chemical Symbol

• Atom