Chapter 1
Adding & Subtracting Integers
Adding & Subtracting Integers
The absolute value of –12 is this number.
12
The rule for multiplying integers with the same sign is...
The product is always positive.
This word describes whole numbers that are positive, negative, and zero, such as –4, 0, and 7.
Integers
This type of organism makes its own food using sunlight, such as grass or algae.
Producer
The starting materials in a chemical reaction are called this, while the new substances formed are called this.
Reactants/Products
When subtracting integers, you should follow this rule. What is the rule called?
Keep, change, opp.
The rule for dividing integers with different signs is...
The quotient is always negative.
The number that, when added to another, results in zero is called this.
Additive Inverse
This type of organism cannot make its own food and must eat plants or animals.
Consumer
This law states that during a chemical reaction, matter and energy are neither created nor destroyed, only rearranged.
The Law of Conservation of Matter and Energy
You start with –15 points in a game. You gain 22 points, then lose 10 points. What is your final score?
-3
Simplify: (−6) × 4 ÷ (−3).
8
This is a pair of numbers, like +3 and –3, that cancel each other out when added together.
Zero Pair
Fungi and bacteria break down dead plants and animals into nutrients. They are called this.
Decomposers
In photosynthesis, the reactants are carbon dioxide, water, and light energy. The products are these two substances that store and release energy.
sugar (C6H12O6) and oxygen (O2)
This is the distance between –7 and 16 on a number line.
23 units
The absolute value of a product is always this, no matter the signs of the integers.
Positive
This term describes a number’s distance from zero on a number line, always written as a positive value.
Absolute Value
A rabbit eats grass, and then a hawk eats the rabbit. Which type of organism is the rabbit?
Primary consumer (herbivore)
The products of photosynthesis become the reactants of this process, which occurs in the mitochondria and releases energy for cells.
Cellular respiration
Simplify this expression: (–8) – (–3) + (–6). Explain which integer rules you used.
–11; using the "subtraction keep, change, opp" rule
A scuba diver descends at a rate of –12 feet per minute. After 8 minutes, how far below sea level is the diver?
-96 feet
The absolute value of –12 is 12. What is the sum of –12 and its additive inverse?
0
In an ecosystem, which group recycles nutrients back into the soil so producers can grow again?
Decomposers
What is the most important chemical reaction for life on Earth?
Photosynthesis