Which statement below is correct:

metal and nonmetal = ionic - Example: NaCl

metal and nonmetal = covalent bond - Example: H₂O

nonmetal and metal = covalent bond - Example: NaCl

nonmetal and nonmetal = ionic - Example: Fe₂O₃

Which of the statements about physical properties is true.

Boiling point is the temperature at which a liquid changes into a solid.

As long as a liquid is boiling the temperature goes up.

Ice melts to form liquid water at 31° F.

Which of the following statements is true about chemical bonds?

Covalent bonds occur when elements share electrons.

Covalent bonds occur when elements give away electrons.

Ionic bonds occur when elements share electrons.

Ionic bonds occur when elements lose electrons to the atmosphere.

A substance is tested with pH paper. How can you determine the pH number?

You compare the color of the strip to a pH chart.

It will turn red in an acid and blue in a base.

If matter cannot be created or destroyed, how do we get new stuff?

Molecules of substances are broken down and then reformed into different (new) substances.

The atoms of elements are continually being made on Earth.

The elements on the Periodic Table are in unlimited supply.

New elements are made from old ones.

Which of the following statements is TRUE:

an acid is also called alkaline

a base has a pH number between 1-6

an acid has a pH number between 8-14

Cobalt has how many protons, neutrons, and electrons?

27 protons, 32 neutrons, 27 electrons

27 protons, 31 neutrons, 27 electrons

27 protons, 32 neutrons, 28 electrons

27 neutrons, 32 protons, 27 electrons

Which of the following is not true about elements?

Elements can be changed into simpler substances.

Elements are composed of one kind of atom.

All substances are composed of one or more elements.

Elements are combined to form compounds.

If I were going to draw an atom of calcium, then how many electrons would I need to draw and where would I place them?

20 electrons on the orbits surrounding the nucleus

40 electrons on the orbits surrounding the nucleus

Which is the best explanation of what happens in a chemical reaction?

Substances are broken apart and then reformed into new substances that have the same number of atoms of each of the elements as the original substances.

Elements are broken apart and then reformed into new substances that have the same number of atoms of the elements of the original compounds.

Substances are joined and multiply into substances that have more atoms of each of the elements of the original compounds.

Substances are broken apart and then reformed into new substances that have fewer atoms of each of the elements as the original compounds.

What law states that "Matter can neither be created nor destroyed, but can change form"?

The Law of Conservation of Matter

Chemistry Exam Review

Authored by Justin Bramblett

Science

7th Grade

36 Questions

NGSS covered

Used 10+ times

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the correct atomic structure for an atom?

protons and neutrons within a nucleus and the electrons moving around the nucleus

electrons and neutrons within a nucleus and the protons moving around the nucleus

protons and electrons within a nucleus and the neutrons moving around the nucleus

electrons within a nucleus and the protons and neutrons moving around the nucleus

Which elements will have the MOST similar chemical properties?

Magnesium and calcium

Calcium and titanium

Magnesium and zirconium

Titanium and silicon

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the chemical symbol for the element Cadmium?

Cad

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which element on The Periodic Table is in the 5th period and 5th group?

Iron

Niobium

Krypton

Selenium

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the atomic number for Praseodymium?

140.91

141

142.91

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Most of the elements on The Periodic Table of Elements are:

the same

metals

nonmetals

metalloids

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which statement below classifies the following substances correctly:

Pure substance = chex mix and Heterogeneous Mixture = mixed beans

Pure substance = water and Heterogeneous Mixture = perfume

Pure substance = oxygen and Heterogeneous Mixture = chex mix

Pure substance = sugar water and Heterogeneous Mixture = rock

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Chemistry Exam Review

What is the correct atomic structure for an atom?

Which elements will have the MOST similar chemical properties?

What is the chemical symbol for the element Cadmium?

Which element on The Periodic Table is in the 5th period and 5th group?

What is the atomic number for Praseodymium?

Most of the elements on The Periodic Table of Elements are:

Which statement below classifies the following substances correctly:

An unknown substance seems to be very light and heats up quickly. It is showing the properties of

Which statement below is correct:

Which of the following formulas represents a diatomic molecule?

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