First Test Review!

Before starting an experiment, you should try an experiment on your own open all containers and packages read all directions and make sure you understand them handle all the equipment to become familiar with it 30

Matter is made up of particles too small to be seen by the human eye Matter is made up of particles too small to be seen by the human eye. What are these particles? Atoms Compounds Mixtures oxygen 30

What is the measurement in centimeters at point A? 6 5/16 0.6 1 30

Which of the following is not a compound? HCl Cl H2O CO2 30

If you get hurt or injured in any way, you should tell your teacher immediately find bandages or first aid kit go to the principals office get help after you finish the lab 30

Identify the lab equipment. scale Graduated cylinder ruler triple beam balance 30

The electron cloud is Much smaller than the atom’s nucleus Much larger than the atom’s nucleus About the same size as the atom’s nucleus Always changing size 30

An atom's mass number equals the number of... protons plus the number of electrons protons plus the number of neutrons Protons neutrons 30

What unit of measurement would you use with this tool? meter liter gram yard 30

When an atom loses a valence electron, it becomes a(n) _____________ ion. Positive Negative Neutral Polyatomic 30

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What SI unit do we use for mass? pounds inches Kelvin grams 30

Two elements chemically bonded form Compound Mixture Molecule 30

Elements in the periodic table are arranged by How they react with metals Half-life and atomic mass Properties and atomic number The number of neutrons and ions 30

How much mass does the object have? 35 g 330.5 g 335 g 3305 g 30

Neutrons: 42 Electrons: 36 Element: Arsenic Normal atom Isotope Cation anion 30

What are neutrons? Uncharged particles in an atom’s nucleus Negatively charged particles in an atom’s nucleus Uncharged particles that form a cloud around an atom’s nucleus Charged particles that form a cloud around an atom’s nucleus 30

Identify the lab equipment. beaker Graduated cylinder Erlenmeyer flask funnel 30

Which of these tools would be used to find the length of the football field? graduated cylinder meter stick triple beam balance thermometer 30

The nucleus of the atom contains Protons, neutrons and electrons Only electrons Protons and neutrons Electrons and protons 30

How many electrons do atoms need to be stable? 1 2 6 8 30

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An atom consists of Metals, nonmetals, and metalloids Electrons, protons, and neutrons Elements, compounds, and molecules Products, reactants, and catalysts 30

A substance made of only one type of atom is a(n) Element Compound Mixture Molecule 30

An ion is an atom with More than one proton More than one nucleus No electrical charge An overall electrical charge 30

How many Valance electrons does Iodine Have? 6 16 7 17 30

The atomic number of an element tells you the atom’s Mass Number of neutrons Weight Number of protons 30

How much liquid is in the graduated cylinder? 76 mL 70.3 mL 73 mL 74 mL 30

The positively charged particles in an atom are Electrons Neutrons Nuclei Protons 30

What are electrons? Positively charged particles Negatively charged particles Particles with no charge Particles whose charge can change 30

The atomic number of this pictured element is     28 58.6934  Ni Nickel 30

The total number of protons and neutrons in the nucleus determines the atom’s Symbol Atomic number Atomic mass number size 30

How many electrons does Oxygen need to fill its outer shell? 3 4 1 2 30

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What does the 1 stand for? Hydrogen Atomic number Atomic mass Atomic explosion 30

What is the measurement in centimeters at point E? 56 5.6 5.5 5 3/16 30

An element's identity is determined by the number of Electrons Protons Neutrons Valence 30

What does the 1.0078 stand for? Hydrogen Atomic number Atomic mass Atomic explosion 30

Protons: 15 Neutrons: 16 Electrons: 15 Normal atom Isotope Cation anion 30

Atomic Number: 26 Neutrons: 30 Electrons: 25 Normal atom Isotope Cation anion 30

Negative ions form when atoms _________ valence electrons. Lose Gain Share 30

Cations are Postive Negative Only on the right side Nonmetals 30

When I enter the science lab, I will begin my experiment play with equipment wait for the teacher to give instructions read the instructions myself and get started 30

How long is the crayon? 71 cm 7.1 cm 7.0 m 7.0 cm 30

What should you do when you have completed your laboratory activity? sit and talk to your lab partner leave your area messy wash your hands thoroughly clean up your area 30

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