Chemistry Review Test Thursday, March 3/4. Brittleness is a ____________ property. PHYSICAL.

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Presentation transcript:

Chemistry Review Test Thursday, March 3/4

Brittleness is a ____________ property. PHYSICAL

Vertical columns on the periodic table that have similar properties are called… GROUP OR FAMILY

Protons have what charge? POSITIVE

What particles are in the nucleus of an atom? PROTONS AND NEUTRONS

A pure substance made of two or more elements chemically combined in a set ratio is a… COMPOUND

What is the atomic number of Neon? 10

What parts of an atom move around the nucleus? ELECTRONS

If enough heat is added to a liquid, it can change into… A GAS

Burning wood is an example of what kind of change? CHEMICAL

Boiling water is an example of what kind of change? PHYISCAL

Is O 2 an example of an element, molecule, compound, or both (molecule and compound)? MOLECULE Molecules: two or more atoms bonded together

True or False Bleaching your hair is an example of a physical change. FALSE

How do you determine the number of protons of an element? ATOMIC NUMBER OR NUMBER OF ELEMENTS

Dissolving sugar in water is an example of what kind of change? PHYSICAL

What happens to the molecules in a liquid when thermal energy is added? THE MOLECULES START TO MOVE FASTER AND WILL TURN INTO A GAS

Lightening and neon lights are two examples of what phase of matter? PLASMA

True or False Kevlar is an example of a synthetic material? TRUE

How many electrons are in Rubidium? 37

Oxygen, Sulfur, Iron, and Helium are examples of… ELEMENTS

Define matter. Anything that has a mass and takes up space.

What phase of matter has a definite volume but not a definite shape. Liquid

Name this element. Sulfur

Rust is an indicator that what type of change has occurred? CHEMICAL

What change does an electron have? NEGATIVE

Horizontal rows in the periodic table are called… PERIODS

Electrical conductivity is an example of what kind of kind of property? PHYSICAL

What phase of matter has a definite shape and volume? SOLID

Only three questions left!

True or False. The atomic mass is the same number of protons and electrons. FALSE The atomic number is the same as the number of protons and electrons.

Glass breaking is an example of a _____________ change. PHYSICAL

What is the atomic mass of Chlorine? or 35