Classification of Matter and Atomic Structure Test

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Questions and Answers

Which of the following is a mixture?

Oxygen

Tea (correct)

Helium

Gold

A substance with definite volume but no definite shape is a solid.

False

What is the chemical symbol for potassium?

Elements in group 1 are known as ___________ metals.

alkali Signup and view all the answers

Match the following elements with their classification:

Iron = Metal Chlorine = Nonmetal Silicon = Metalloid Calcium = Metal Signup and view all the answers

Tap water is best described as which of the following?

Homogeneous mixture Signup and view all the answers

Which of the following is classified as a compound?

Sugar Signup and view all the answers

All the following are homogeneous mixtures except which one?

Orange juice with pulp Signup and view all the answers

A pure substance has a variable chemical composition.

False Signup and view all the answers

Describe the main difference between a homogeneous and heterogeneous mixture.

A homogeneous mixture has a uniform composition throughout, while a heterogeneous mixture has a non-uniform composition with visibly distinct phases. Signup and view all the answers

An atom is the smallest unit of an ______.

element Signup and view all the answers

Match the following types of matter with their descriptions:

Element = A pure substance consisting of only one type of atom Compound = A pure substance formed from two or more chemically bonded elements Homogeneous Mixture = A mixture with uniform composition throughout Heterogeneous Mixture = A mixture with non-uniform composition with visible phases Signup and view all the answers

Which of the following is NOT typically provided on the periodic table given for the test?

Group Numbers Signup and view all the answers

Which of the following is the correct location of protons in an atom?

In the nucleus Signup and view all the answers

The mass number of an atom is equal to the number of electrons in its nucleus.

False Signup and view all the answers

How many valence electrons does an alkali metal in period 2 have?

1 Signup and view all the answers

The atomic number of an atom indicates the number of ______ in the atom.

protons Signup and view all the answers

Given the atomic number and mass number of an atom, what is the number of neutrons in it?

The difference between the mass number and atomic number. Signup and view all the answers

If an element has 17 protons, 18 neutrons, and 17 electrons, what is the element's mass number?

35 Signup and view all the answers

Which of the following best describes the number of protons, electrons, and neutrons in a hydrogen-2 isotope?

1 proton, 1 electron, and 1neutron Signup and view all the answers

Match the subatomic particle with its corresponding charge:

Proton = Positive Neutron = Neutral Electron = Negative Signup and view all the answers

Study Notes

Test 1 Outline: Classification of Matter, Atomic Structure, and Isotopes

Test covers "Classification of Matter, Atomic Structure and Isotopes" for weeks 1-3
Test is in-person, during Class 1 of Week 4
Test has online (computer) and written components
Test duration: 60 minutes
Two parts:
- Part 1: Multiple choice questions, completed on computers using Lockdown Browser (bring appropriate device)
- Part 2: Short answer questions, completed in class on paper
Test is out of 30 marks
20-minute late penalty: No extra time and a make-up test.
Test question types: short answer, multiple choice, true/false, fill-in-the-blank, matching
Single attempt allowed
Periodic table provided, but unlabeled (no group or period numbers, or group names)
Review lectures, handouts, learning checks, group assignments, and Brightspace resources for preparation

Key Content Focus:

Matter: Classify matter as element, compound or mixture; differentiate between pure substance and mixture; differentiate between homogeneous and heterogeneous mixtures; provide real-life examples of pure substances and mixtures
Periodic Table: Identify element names/symbols from the first 20 elements and those in class; determine group and period; recognize properties of elements (periods, groups, metals and nonmetals).
Atoms: Describe the structure (charge, mass, location) of electrons, protons and neutrons; determine protons/neutrons/electrons from atomic number/mass number; recognize Bohr model of atoms; determine valence electrons; differentiate metals, nonmetals and metalloids
Isotopes: Determine the numbers of protons, neutrons, and electrons in isotopes of an element; identify the most abundant isotope; characterize and represent elements and isotopes based on atomic number and mass number
Example Isotope Issue: A sample of unknown element 'X' has two naturally occurring isotopes (X-39 and X-41). The specific percentages are given. Determine the atomic mass of 'X'.

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Description

Prepare for your upcoming test on the Classification of Matter, Atomic Structure, and Isotopes. This quiz covers key concepts from the first three weeks, including how to classify matter into elements, compounds, and mixtures. Make sure to review your lectures, handouts, and all supplemental resources before attempting the online and written components.