Chemistry Unit Review

In general, which of the following statements about metals is true?

In order for dry ice to sublimate, the dry ice must ________________.

Salt can be classified as a(n) ______________.

Which 2 particles in an atom are equal in number?

Luster

When a liquid changes into a solid it is called ______.

____ was the scientist who said electrons travel on specific energy levels or paths.

How did Mendeleev arrange the first periodic table?

If you combine 2 substances, at room temp. and the beaker feels cold to the touch, it means the substances ___.

What is it called when a liquid changes into a gas?

How would you describe the molecular motion of a gas?

How many atoms of Magnesium? 3Mg₂

When a solid changes into a gas, it is called ______

Vertical columns on the periodic table are known as

At room temperature, more than half of the nonmetal elements are

When thermal energy is removed from a gas, the substance will become a _________________.

Which group of elements has some properties of metals and some properties of nonmetals?

How does adding thermal energy to a solid affect the molecules? 

For condensation to occur __________.

Chemical or Physical?  salt dissolving in water

Chemical or Physical? Water freezing

Each group in the periodic table has its own characteristic properties based on the number of ___.

The scientist that said the atom could be similar to a watermelon with seeds or plum pudding

The model that is currently accepted to be the modern atomic theory is the ___.

Why are metalloids useful for the production of semiconductors?

How did Henry Mosely arrange the current periodic table?

The law of conservation of matter states that during a chemical reaction ___.

Which is an endothermic change?

Which is an exothermic change?

Oxygen can be classified as a(n) ___________________

Chemical or Physical?: Cleaning a penny with vinegar and salt.

Which of the following happens when thermal energy is removed from a substance? 

The two subatomic particles found in the nucleus:

Rutherford used the __ to say the atom was mostly empty space with a positively charged center

List the states of matter in order of increasing attractive forces.

Which change of state is endothermic?

How are elements identified on the periodic table?

The reverse of condensation is ____________.

Fluorine has an atomic number of 9 and an atomic mass of 18.9. How many neutrons does it have?

Cl?

What 2 subatomic particles are equal in number?

Which is NOT a way to detect a chemical reaction has occurred?

Which of the following happens when you add thermal energy to a liquid?

Wait for the square....How many protons does Sulfur have?