Atomic Adventure Assessment

The basic building blocks of all matter are—

• Molecules

• Atoms

• Compounds

• Mixtures

Tags

NGSS.MS-PS1-1

Which of the following are true about atoms? Choose 2 correct answers.

• The properties of an atom are based on the number and arrangement of its subatomic particles.

• Electrons are found inside the nucleus of the atom.

• Atoms are made up of protons, neutrons, and electrons.

• An element is a form of matter made up of two or more types of atoms that have been chemically bonded together.

• Atoms of an element always have the same number of neutrons.

Tags

NGSS.MS-PS1-1

Using the following equations C + O₂ --> CO₂ Which term best describes the left-hand side of this equation?

• The products

• The compound

• The electrons

• The reactants

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NGSS.MS-PS1-1

NGSS.MS-PS1-2

The following equation shows some carbon and oxygen atoms. Use the graphic to answer the question. C + O₂ --> CO₂ Which is another way to show this chemical equation?

• One carbon atom plus one oxygen atom reacts to form one molecule with one carbon and two oxygens shown bonded

• Two carbon atoms plus two oxygens react to form two molecules each with two carbons and two oxygens

• Two carbon atoms react to form a molecule with two oxygens bonded together

• One carbon atom plus one oxygen atom reacts to form a molecule with one carbon bonded to one oxygen

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

The chemical formula for ammonium is NH₄. N is the symbol for nitrogen and H is the symbol for hydrogen. Which of the following are true about ammonium?

• There are 4 nitrogen atoms in ammonium.

• There are 4 hydrogen atoms in ammonium.

• Nitrogen and hydrogen are not chemically bonded.

• Nitrogen and hydrogen are mixed but not bonded.

Tags

NGSS.MS-PS1-1

The chemical formula for table salt is NaCl, where Na = Sodium and Cl = Chloride. If a coefficient is placed in front of Na making two sodium atoms, there will be (a)   chloride atom(s). Write the correct number in the box:

Tags

NGSS.MS-PS1-1

The following graphic shows some carbon and oxygen atoms. Use the graphic to answer the question. C + O₂ --> CO₂ In this equation, which represents the product(s)

• C

• O

• C + O₂

• CO₂

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

Chemical bonds are formed between which parts of atoms?

• Protons

• Electrons

• Neutrons

• Vacuoles

When two elements chemically combine, they form a—

• reactant.

• mixture.

• compound.

• valence.

Tags

NGSS.MS-PS1-1

This equation shows what happens when hydrogen and oxygen are chemically combined. 2H₂ + O₂ → 2H₂O How many total hydrogen atoms are in the product of this equation?

• 0

• 1

• 2

• 4

Tags

NGSS.MS-PS1-5