Atoms
The tiny parts that make up an atom.
What are subatomic particles?
A pure substance that is made up of two or more types of elements that are chemically combined
What is a compound?
On the periodic table, groups are organized in _____________?
What are columns?
A ________ describes how matter looks, feels or interacts with other matter
What is a property?
Which one of the following statements is correct?
a. Water and nitrogen are both elements.
b. Water is an element and nitrogen is a compound.
c. Water and nitrogen are both compounds.
d. Water is a compound and nitrogen is an element.
What is (d.) Water is a compound and nitrogen is an element?
The center of an atom is called___________
What is the nucleus?
If it is easy to tell the components apart, that is a_______________ mixture.
What is heterogeneous?
What is Al on the periodic table?
What is aluminum?
In which state of matter are the particles able to move around one another?
What are liquids and gases?
The Law of Conservation of Mass states that, in a chemical reaction, there is ____________________?
What is no loss of mass?
The subatomic particle located in the nucleus that has no charge.
What is the neutron?
What type of mixture is dirt?
What is heterogeneous?
The periodic table is arranged according to the _______________ of the elements.
What is the atomic number?
A ____________ is anything we can observe without changing the identity of the substance we are looking at.
For example: color, odor, hardness and texture.
What is a physical property?
____________are below the element telling us how many atoms are present.
What are subscripts?
A charged atom.
What is an ion?
Which one of the following elements is a non-metal?
a. Iron
b. Gold
c. Zinc
d. Carbon
What is (d.) Carbon?
How many atoms are in the compound listed:
Na3OAl2(C2H)2
What is 12?
Heat is produced that was not there before, is a sign of?
What is chemical change?
In a chemical reaction, we call materials that are going to react, reactants. The materials that result are called the ______________.
What is the product?
Substances, made up of atoms, that cannot be further broken down into simpler substances.
What are elements?
Methane is a pure substance and exists as a gas at room temperature. Each methane molecule is made up of one carbon atom chemically bonded to four hydrogen atoms. How is methane classified?
What is a compound?
An atom of lead has the atomic number 82 and a mass number of 207. How many neutrons does this atom of lead have?
What is 125?
Solutions can be acidic, basic, or neutral. Neutral is a pH of?
What is 7?
This one is REALLY hard!!
The Law of Conservation of mass was given by _______?
a.) Julius Robert Mayer
b.) Antoine Laurent Lavoisier
c.) Dmitri Ivanovich Mendeleev
d.) Linus Carl Pauling
Who is (b.) Antoine Laurent Lavoisier?