WorksheetsScience Study Guide
Total questions: 41
Worksheet time: 27mins
What is a homogeneous mixture?
A mixture that has the same uniform appearance
throughout
A mixture of water and one other substance
A mixture with visibly different
substances or phases
A mixture with all three states of matter: solid, liquid & gas
What is a heterogeneous mixture?
A mixture with all three states of matter: solid, liquid & gas
A mixture with visibly different
substances or phases
A mixture with water and up to two other substances
A solution with several different elements, including gold
Is water heterogeneous or homogeneous?
Heterogeneous
Homogeneous
Is trail mix heterogeneous or homogeneous?
Homogeneous
Heterogeneous
What is a solution?
A mixture with different kinds of substances
A special kind of heterogeneous mixture that contains dissolved solutes
A special kind of homogeneous mixture that contains dissolved solutes
A solute
How is solubility measured?
The # grams of a substance dissolved in 100mL water at 100 degrees F
The # grams of a substance dissolved in 100mL water at a certain temp
100 grams of a substance dissolved in 90 mL water at a certain temp
5 grams of a substance dissolved in 80mL water at a certain temp
What are subatomic particles?
Electrons
Protons and neutrons
Protons, neutrons and electrons
Valence electrons
Where are these subatomic particles located?
Protons + neutrons in the nucleus, electrons surround the nucleus
Protons in the nucleus, neutrons and electrons surround the nucleus
Protons, neutrons & electrons in the nucleus
None of the above
What is an isotope?
A heterogeneous element
An homogeneous element
A group of elements with the same exact average mass
A variety of an element, which may have a slightly different mass than the average
When/how does radioactivity happen?
All of the above
Protons are ejected from the nucleus to try and stabilize the atom
Electrons are ejected from the nucleus to try and stabilize the atom
Neutrons are ejected from the nucleus to try and stabilize the atom
What information does the atomic mass (bottom number) give you?
The mass of the compound
The total number of protons the element has
An average of all the known masses of an element
The total number of protons and electrons the element has
What does the atomic number (top number) determine?
The average mass of the element
The number of protons in the nucleus, the number of electrons and the name of the element
The name of the element
The number of neutrons in the nucleus, the number of electrons and the name of the element
What is a pure substance?
A substance that is composed of two elements and two molecules
A substance that is composed of only one type of compound
A substance that is composed of only 1 type of element or 1 type of molecule
A substance that is composed of only one proton
Is this an ionic, covalent or metallic bond?
Ionic
Covalent
Metallic
Is this an ionic, covalent or metallic bond?
Ionic
Covalent
Metallic
Is this an ionic, covalent or metallic bond?
Ionic
Covalent
Metallic
What type of ion is this?
(a)
What type of ion is this?
(a)
What group of elements is this?
Actinides
Alkali Metals
Lanthanides
Noble Gases
What group of elements is this?
Actinides
Lanthanides
Metalloids
Alkali Metals
What group of elements is this?
Alkali Metals
Actinides
Noble Gases
Metalloids
What group of elements is this? (Including Og/Oganesson)
Noble gases
Metalloids
Oxygen Family
Helium Family
What group of elements is this? (You could include Po/Polonium in this group as well)
Oxygen Family
Boron Family
Metalloids
Alkaline Metalloids
What happens as you go down and across the rows of the periodic table?
The atomic numbers increase
The atomic masses increase
The electron shells increase
The number of valence electrons increase
In nature, what state of matter do elements usually show up as?
Solid
Liquid
Gas
What are man-made elements usually like?
Unstable
Exist only briefly
Have only one known mass
All of the above
What is the definition of a mixture?
The result of combining four or more substances and a chemical reaction happens
The result of combining two or more substances, such that each maintains its chemical identity.
The result of combining three or more substances, such that each maintains its chemical identity
The result of combining two or more substances and a chemical reaction happens
What is the definition of an atom?
The smallest particle of an element; made of protons, neutrons and electrons
A negatively charged particle
The biggest particle of an element; made of protons, neutrons and electrons
A subatomic particle
What is the definition of an element?
A group of two or more different atoms
A neutrally charged particle
A positively charged particle
The simplest form of a substance that cannot be broken down further
What is the definition of a compound/molecule?
A group of atoms chemically bonded together
Three or more atoms chemically bonded together
Two or more atoms chemically bonded together
Two or more atoms physically bonded together
What is the definition of an atomic mass unit (AMU)?
Measurement of the mass of electrons and neutrons in an atom
Measurement of the mass of protons and electrons in an atom
Measurement of the mass of protons and neutrons in an atom
None of the above
What is the best word for a positively charged particle, located in the center of the nucleus?
Proton
Neutron
Electron
Subatomic Particle
What is the definition of a neutron?
Located in the center of the nucleus; adds to an atom’s mass and helps hold the nucleus together. Has a positive charge
A particle that adds to the atom's mass and has a positive charge
Negatively charged particles located outside the nucleus. Barely have any mass. Can affect the charge of an atom, called a (+) or (-) ion
Located in the center of the nucleus; adds to an atom’s mass and helps hold the nucleus together. Has no charge
What is the best word for a negatively charged particle located outside the nucleus that barely has any mass and can affect the charge of an atom, called a (+) or (-) ion?
Proton
Neutron
Electron
None of the above
What is the best word for a solid material whose atoms, molecules or ions are arranged in an ordered pattern?
Atom
Compound/Molecule
Subunit
Extended Structure/Crystal
What is the definition of matter?
A negatively charged particle
A positively charged particle
The smallest particle
Anything that has volume and mass
What is the definition of the atomic number?
The average mass of the element
The number of neutrons in an element
The top number above an element symbol and the number of protons in an element
The bottom number below an element symbol and the number of protons in an element
What is the definition of a solute? (Hint: Think of solutions)
The thing that’s being dissolved; smaller portion
The thing that does the dissolving; bigger portion
Water
Salt
What is the definition of a solvent? (Hint: Think of solutions)
The thing that does the dissolving; larger portion
Water
Salt
A mixture of two or more substances
What is the definition of radioactive?
When an atom gives off heat energy
When an atom loses protons and becomes more negatively charged
When an atom loses electrons and becomes more positively charged
When an atom decays into another element and emits particles, giving off energy
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