Math For Chemistry Quiz 1
Math for Chemistry Quiz 1 assesses basic algebra skills, including solving equations and understanding terms like 'base' and 'evaluate. ' It's designed to enhance mathematical reasoning crucial for chemistry studies.
- 1.
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- 2.
All equations have equal signs
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The statement "All equations have equal signs" is true because an equation is a mathematical statement that shows the equality between two expressions using an equal sign. In an equation, both sides of the equal sign represent the same value or quantity. Without an equal sign, it would not be an equation but rather an expression or inequality. Therefore, the presence of an equal sign is a necessary condition for an equation.Rate this question:
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- 3.
Evaluate means :
- A.
The number in front of the variable
- B.
replace each variable with a number and follow the order of operations
- C.
The repeated factor of a number in exponential form
- D.
A set of whole number and their opposites
Correct Answer
B. replace each variable with a number and follow the order of operationsExplanation
The term "evaluate" in mathematics refers to the process of substituting variables with specific numbers and performing the necessary operations according to the order of operations. This allows us to find the numerical value of an expression or equation.Rate this question:
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- 4.
The repeated factor of a number in exponential form?
Correct Answer
base - 5.
6 + x/4 = -1
- A.
.8
- B.
-28
- C.
-20
- D.
20
Correct Answer
B. -28Explanation
To solve the equation 6 + x/4 = -1, we need to isolate the variable x. First, we subtract 6 from both sides to get x/4 = -7. Then, we multiply both sides by 4 to eliminate the fraction, which gives us x = -28. Therefore, the correct answer is -28.Rate this question:
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- 6.
X + 13 = 25
- A.
38
- B.
12
- C.
-12
- D.
-38
Correct Answer
B. 12Explanation
The equation X + 13 = 25 can be solved by subtracting 13 from both sides of the equation. This gives us X = 12. Therefore, the correct answer is 12.Rate this question:
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- 7.
Solve -5 = c/7
- A.
-7/5
- B.
-12
- C.
-5/7
- D.
-35
Correct Answer
D. -35Explanation
To solve the equation -5 = c/7, we need to isolate the variable c. We can do this by multiplying both sides of the equation by 7, which cancels out the denominator on the right side. This gives us -35 = c. Therefore, the value of c that satisfies the equation is -35.Rate this question:
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- 8.
The number in front of the variable is the ______
Correct Answer
coefficientExplanation
The number in front of the variable is referred to as the coefficient. Coefficients are used to multiply the variable in an algebraic expression or equation. They indicate the quantity or scale of the variable's value.Rate this question:
- 9.
Solve the following m/4 + 9/8. What is the first step; you must have identical?
- A.
Numerators
- B.
Variables
- C.
Denominators
- D.
Fractions
Correct Answer
C. DenominatorsExplanation
To solve the given expression, the first step is to ensure that the denominators of the fractions are identical. This is because when adding or subtracting fractions, the denominators must be the same. In this case, the denominators are "4" and "8". To make them identical, we can find the least common multiple (LCM) of 4 and 8, which is 8. Therefore, the first step is to convert the fraction with a denominator of 4 to an equivalent fraction with a denominator of 8.Rate this question:
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- 10.
A term without a variable is the coefficient
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
constantRate this question:
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- 11.
Meaghan was asked to solve the following 4m + 8 = -27 + 81m. What the second step she should perform?
Correct Answer
combine like termsExplanation
The second step Meaghan should perform is to combine like terms. In the given equation, 4m and 81m are like terms as they both have the variable m. By combining these terms, Meaghan can simplify the equation and solve for the value of m.Rate this question:
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Mar 20, 2023Quiz Edited by
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Sep 11, 2016Quiz Created by
Bensonfelicia
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