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1.3 Studying and Learning Chemistry -- Part 1

- Strategies that are effective for learning can be identified.

- Before the class lecture, read the chapter.

- A study plan is needed for learning chemistry.

- During the class lecture, be active.

- Key core chemistry skills should be reviewed.

What are some precautions you can take while working?

- A student in your class is asking for advice.

- Take a look at math concepts used in chemistry: place values, positive and negative numbers, percentages, and equations.

- Many chemistry problems involve numbers.
- You will need a lot of math skills.
- Key math skills that are important for chemistry will be reviewed.
- Key math skills will be reference as we move through the chapters.

- The ones place is the first place to the left of the decimal point, and the tens place is the second place to the left.

- A bullet found at a crime scene has lead in it.

- The positive sign is not written in front of the number.
- The number +8 can also be written as 8.
- A negative eight is written as -8.

- The answer is positive when there are two positive numbers or two negative numbers.

- The answer is negative when a positive number and a negative number are combined.

- The rules for multiplication and division are the same.
- The answer is positive when there are two positive numbers or two negative numbers.

- The answer is negative when a positive number and a negative number are combined.

- The sign of the answer is positive when positive numbers are added.

- The sign is understood as 3 + 4 + 7.

- The sign of the answer is negative when negative numbers are added.

- Follow the rules for addition when two numbers are subtracted and change the sign of the number to be subtracted.

- Four keys are used for basic mathematical operations on your calculator.
- The sign of a number can be changed using the change sign.

- To practice the basic calculations on the calculator, you have to work through the problem from the left to the right.
- If your calculator has a change sign, a negative number can be entered by pressing the number and then pressing the change sign.
- Press the equals at the end.

- To determine a percentage, divide the parts by the whole.

- There are 5 red balls in every 100 balls if the percentage is 5.
- There are 50 green balls in every 100 balls if the percentage is 50.

- A bullet found at a crime scene may be used as evidence in a trial if the percentage of metals is a match to the composition of metals in a bullet from the suspect's bullets.
- Your answers should be sent to the ones place.

- The total mass of a bullet is marked as evidence.

- Your answers should be sent to the ones place.

- The suspect's bullet is made of lead, tin, and antimony.

- The bullet from the crime scene does not match the composition of this bullet, which can't be used as evidence.

- In chemistry, we use equations to express the relationship between variables.

- The numbers 8 and 14 are similar.

- The number 8 was subtracted from the left side of the equation.

- The variable you need to solve is isolated.

- Check your answer.

- You need to subtract the same symbol or number on the other side if you eliminate a symbol by subtracting.

- You need to add the same symbol or number on the other side if you eliminate a symbol.

- If you divide by the same symbol or number, you can cancel it.

- If you cancel a symbol or number by subtracting it from another, you need to divide it into two parts.

- Body temperature is indicated by C and 32 color.

- We subtract 32 from both sides to get the equation for converting degrees to degrees.

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