Unit 2 Review - Atoms and Matter

Atoms

100

A positively charged subatomic particle is...

What is a proton

200

Where are electrons located?

What is the electron cloud

300

The center of the atom is...

What is the nucleus

400

The subatomic particles that make up most of the mass of an atom are...

What are protons and neutrons

500

What are the parts that make up an atom?

What are protons, neutrons, and electrons

ECM

100

Rust (Fe₂O₃) is a...

Compound

200

choose all of the compounds below:

O₃         CO₂

H₂O      NaCl

N₂

H₂O      NaCl       CO₂

300

Sodium has an atomic number of 11 and a mass number of 23. How many neutrons would be in an atom of Sodium?

What is 12

400

A sample of matter is made of identical atoms. The sample could be...

What is an element

500

Based on Beryllium's position on the periodic table of elements, which combination could best be used to model the structure of a beryllium atom?

White: protons, Black: electrons, Gray: Neutrons

• A: 4 white balls, 4 black balls, and 5 gray balls
• B: 4 white balls, 4 black balls, and 9 gray balls
• C: 4 gray balls, 4 black balls, and 4 white balls
• D: 4 gray balls, 5 black balls, and 9 white balls

A: 4 white, 4 black, 5 gray

Physical/Chemical Changes

100

Molding is a...

What is a chemical Change

200

Does a physical change form a new substance?

What is no

300

a chemical change has _______ properties

What is different

400

a change in state of matter is a...

What is physical change

500

Evidence of a chemical reaction

what is 

unexpected change in color

unexpected change in energy (light/heat)

change in odor

produces precipitate/gases

Chemical Equations

100

How many atoms of carbon are found in the compound 2Na₂C₂O₄

What is 4

200

How many elements in the following chemical formula: 

C₁₂H₂₂O₁₁

what is 3

300

What are all of the reactants of this chemical equation of photosynthesis:

6CO₂ + 6H₂O + light energy --> C₆H₁₂O_{6 +} 6O₂

Carbon Dioxide (CO₂), water (H₂O)

400

Count the atoms of this chemical formula:  

N₂ + O₂ + Ar + CO₂ + Kr

N=2

O=4

Ar=1

C=1

Kr=1

500

Is this chemical equation balanced: 

6 CO₂ + 6 H₂O + light energy → C₆H₁₂O₆ + 6 O₂

C=6          l          C=6

O=18        l         O=18

H=12        l         H=12

          Balanced

Other

100

The smallest particle of an element is...

A. Mixture

B. Compound

C. Atom

D. Molecule

What is an atom

200

Element Z has an atomic number of 19 and a mass of 39. Therefore, the number of _______ in element Z is 20.

What is neutrons

300

Which particles make up most of the mass of an atom?

• A: protons and neutrons
• B: protons and electrons
• C: neutrons and molecules
• D: electrons and molecules

A. Protons and neutrons

400

What is the most abundant element in Earth's crust

What is Oxygen

500

Complete APE-MAN for the element Mercury (Hg)

Atomic Number: 80

Atomic Mass: 200.59

A- 80      M- 201

P- 80      A- 80

E- 80      N- 121