Chem. and Phys. Properties and Changes and Chem. Equations

Chem. and Phys. Properties and Changes and Chem. Equations

6th - 8th Grade

34 Qs

quiz-placeholder

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Chem. and Phys. Properties and Changes and Chem. Equations

Chem. and Phys. Properties and Changes and Chem. Equations

Assessment

Quiz

Chemistry

6th - 8th Grade

Hard

Created by

Kristen Sevinsky

Used 14+ times

FREE Resource

34 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image
Chemical Reactions
1.Look at the chemical equation above. The subscript 4 in the reactants indicates that   
A.there are four products that will be formed. 
B.there are four elements present in the reactants.
C.there are four moles of phosphorus present in the reactants.
D.there are four atoms of phosphorus present in the reactants.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A substance is found to be reactive, flammable, soluble, and explosive. Which of these observations is a physical property? 
A.flammable
 B.explosive 
C.reactive 
D.soluble

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a chemical reaction, the total mass of the reactants is 10.0 grams. After the reaction, the total mass of the products must be: 
A.exactly 10.0 grams. 
B.less than 10.0 grams. 
C.more than 10.0 grams. 
D.exactly 20.0 grams.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The substances in a chemical reaction that are combined or separated to form new substances are the _______. 
A.coefficients 
B.chemical equations 
C.products 
D.reactants

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Adam is trying to identify a solid. He places a small amount of the substance in an acid solution and observes whether or not a reaction takes place. This test is based on a _______ property. 
A.physical 
B.radical 
C.biological 
D.chemical

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Gerald's science teacher mixed room temperature samples of hydrochloric acid and sodium hydroxide in a large beaker. The solution still looked clear like water, but when the students carefully touched the beaker one at a time, it felt warm to the touch. 
Why did the beaker most likely feel warm? 
A.The two liquids were not soluble in water. 
B.The release of a gas heated the solution. 
C.The energy of mixing warmed the solution. 
D.A chemical reaction was producing a new substance.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a chemical reaction, the products are 
A.all of the chemical formulas that are used during the reaction. 
B.the number of atoms of each chemical present in the reaction. 
C.the new substances that are formed during the reaction. 
D.the substances that are broken apart or combined in the reaction.

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