Question

density of a metal
name tice vayalo
safety quiz practice

1. in a laboratory, students are measuring the amount of food a dog eats each day. what instrument would you use for the most precise measurement?

a. a beaker marked milliliters
b. a triple beam balance
c. a crucible
d. a beaker marked liters

1. which piece of equipment would you use to measure scoop powder into a dish?
2. what tool would you use to view the sugars crystals?
3. you are asked to measure 56.2 grams of salt, what piece of equipment would you use?
4. if an acid is spilled on your arms, how long should you wash for?

a. 5 minutes
b. 10 minutes
c. 15 minutes
d. 20 minutes

1. in a laboratory, students are measuring the amount of acid that is leaked from pipe. what instrument give you the most precise measurement for this task?

a. a mortar marked milliliters
b. a triple beam balance
c. an erlenmeyer flask marked in milliliters.
d. a beaker marked liters

1. identify this piece of equipment?

what piece of equipment would you use to measure? questions 8 - 16

1. 102.3 grams of salt
2. 70 ml of water

Explanation:

1. Para medir la cantidad de comida que come un perro, se usa una balanza de triple palanca que mide masas.
2. Para medir polvos, se usa un tubo de ensayo.
3. Para ver cristales de azúcar, se usa un microscopio.
4. Para medir 56,2 gramos de sal, se usa una balanza de triple palanca.
5. Si se derrama ácido en el brazo, se debe lavar durante 15 minutos.
6. Para medir la cantidad de ácido derramado, el recipiente con la medida mas precisa es un matraz Erlenmeyer marcado en mililitros.
7. El equipo mostrado es un matraz Erlenmeyer.
8. Para medir 102,3 gramos de sal, se usa una balanza de triple palanca.
9. Para medir 70 ml de agua, se usa un matraz graduated (vaso graduado).

Answer:

1. b. Una triple beam balance
2. c. Un tubo de ensayo
3. Un microscopio
4. Una triple beam balance
5. c. 15 minutos
6. c. Un Erlenmeyer flask marked in milliliters
7. Matraz Erlenmeyer
8. Una triple beam balance
9. Un matraz graduated (vaso graduado)