Atoms and Nuclear Chemistry | Baamboozle - Baamboozle

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What do you call a positive ion?

cation

Calculate the average atomic mass of Q. Use the mass to set the correct sig figs. Do not forget your unit.

162.5 amu

What is the charge of a Chlorine ion that contains 17 protons and 18 electrons?

-1

How many energy levels does phosphorus have?

Phosphorous (P) is in period 3, so it has 3 energy levels

Which family of elements is most electrically conductive?

Metals

What is the isotope name for a nucleus with 81 protons and 133 neutrons?

Thallium-214

Which is a chemical change: chopping wood, leaves changing color, increasing temp of solution, distilling gasoline

Leaves changing color. The chlorophyll molecules break down into component elements.

What is the difference between an element and a compound?

Elements are composed of one type of atom, compounds two or more types of atom

Explain why a state of matter change is a physical change

Physical changes result in a decrease, increase, or spread of molecules. For example, when ice melts into water, the H2O molecules do not change.

How many valence electrons does oxygen have?

Oxygen (O) is in group 16, so it has 6 valence electrons

What is another name for a homogenous mixture?

A solution

True or false: Elements can be atoms OR molecules?

True. Some elements bond with themselves in nature (like O2), some elements exist as single atoms (like Ne)

During the Gold Foil experiment, Rutherford noticed that most of the alpha particles passed directly through the foil, indicating that most of the atom was _________.

Empty space

How many electrons can be placed in the second level of a Bohr model?

8

What is the atomic number for Zn?

30

What is the isotope notation for rhodium-102?

Rh 102 Top Left 45 Bottom Left

Which two subatomic particles have an approximately equal mass?

Protons and neutrons weigh about 1 amu

Which element is brittle at room temp: Potassium, Calcium, Sulfur, Gold, Aluminum

Sulfur, because it is a nonmetal. We saw this in the metals, nonmetals, metalloids lab.

Why does argon not react with other elements?

Ar is a noble gas. Noble gasses have a full valence shell, so they are energetically stable

How many protons does sulfur have?

Sulfur's atomic number is 16, so it has 16 protons

The periodic table is organized by...

Increasing atomic number

List 3 signs of a chemical change

Heat, light, color change (usually), bubbles, new substance

How many electrons does a neutral atom of calcium have?

Calcium's atomic number is 20, so it has 20 protons. A neutral atom has the same number of protons and electrons, so 20.

What subatomic particles are in the isotope Fr-231?

p - 87, e- 87, n-144

What is the difference between the terms mass number and average atomic mass?

Mass number is equal to the number of p + n for a specific isotope. Average atomic mass is the weighted avg. of all naturally occurring isotopes for an element

Calculate the average atomic mass of R. Use the mass to set the correct sig figs. Do not forget your unit.

214.5 amu

What do you call a negative ion?

anion

What is matter?

Anything that has mass and volume

What is the unit for average atomic mass?

a.m.u.

Metal alloys are... elements, compounds, homogenous mixtures, or heterogenous mixtures?

Homogeneous mixtures. The metals are not bonded together

Draw a particle diagram of a liquid solution

Solutions are homogeneous mixtures. Should have two compounds/elements. Molecules flow but at bottom of container.

In a physical change, what happens to the organization of the atoms?

Structure of the element or compound stays the same.

In a chemical change, what happens to the organization of the atoms?

Chemical bonds between atoms are broken and new bonds form. Atoms rearrange.

Which is a chemical change: boiling water, mix dye + water, rust, paint chipping

Rust is a chemical change. The color changes and you need a chemical process to reverse it.