Atoms and molecules

What is the term for combining 2 or more atoms together?

• atoms

• elements

• molecules

• All of the above

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NGSS.MS-PS1-1

All matter is made of what

• energy

• atoms

• electrons

• compounds

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NGSS.MS-PS1-1

What is an element?

• A type of Atom

• Density

• Compounds

• Molecules

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NGSS.MS-PS1-1

Which of these is the simplest atom?

• Uranium
• Chlorine
• Oxygen
• Hydrogen

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NGSS.MS-PS1-1

______ is an ELEMENT since it is only made up of one type of atom.

• Water
• Air
• Gold
• Salt

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NGSS.MS-PS1-1

A molecule is made up of ____ or more atoms.

• 1
• 2
• 3
• 4

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NGSS.MS-PS1-1

The number of atoms it would take to make a molecule of water.

• 1
• 2
• 3
• 4

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NGSS.MS-PS1-1

What does the atomic number represent?

• how many atoms are in a group.

• how much an atom weighs.

• the number of protons in the nucleus of the atom.

Which particles are contained in the nucleus of an atom?

• neutrons and electrons

• protons and neutons

• protons, neutron, and electrons

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NGSS.MS-PS1-1

How are elements and compounds different?

• A compound is a combination of two or more types of matter, an element is one type.
• Compounds are represented by chemical symbols of one letter, elements by two.
• There are an infinite number of elements, but a limited number of compounds.
• Elements are always larger units of matter, and compounds are smaller.

Tags

NGSS.MS-PS1-1