Elements and Compounds

What is the symbol for for the element with atomic number 50?

• Sn
• Ag
• Fe
• Pb

What is the symbol for the element with atomic number 12?

• Mg

• Mn

• Mo

• Mt

What is the symbol for the element with atomic number 26?

• Fe

• F

• Fr

• Fm

The symbol for zinc is __, the atomic number is __.

Which of the following statements correctly describes an element?

• a compound formed by chemical reactions.

• a substance made up of MULTIPLE types of atoms.

• a substance made up of only ONE type of atom.

• a mixture of different substances.

How do compounds differ from elements?

• Compounds are made up of two or more different elements, while elements are made up of only one type of atom.

• Compounds are always found in their pure form, while elements can be mixed with other substances.
• Elements are chemically bonded together, while compounds are pure substances.
• Compounds are made up of only one type of atom, while elements are made up of two or more different atoms.

Tags

NGSS.MS-PS1-1

What do chemical symbols represent?

• Elements
• Equations
• Formulas
• Compounds

Which of the following best describes a chemical formula?

• A way of expressing information about the atoms that are in a chemical compound.

• A detailed explanation of the physical properties of a chemical compound.
• A list of common laboratory equipment used in chemistry experiments.
• A step-by-step procedure for conducting a chemical reaction.

Tags

NGSS.MS-PS1-1

How are atoms and molecules related?

• Atoms are smaller than molecules.

• Atoms are found in living organisms, molecules are found in non-living things.

• Atoms combine to form molecules.

• Atoms and molecules are the same thing, just different names.

Tags

NGSS.MS-PS1-1

What is the chemical formula for sodium chloride?

• HCl
• NaCl
• CO2
• H2O

Tags

NGSS.MS-PS1-1